1875
1875 is the year the Metre Convention was signed.
- Odd
- Composite
Where 1875 fits
Why 1875 is special
Seventeen states agreed a single international system of measurement and created the body that still maintains it. It is one of the oldest functioning international treaties.
Same number, different meanings
How 1875 is understood across different contexts — never implying one meaning because of another.
- Mathematics
Seventeen states agreed a single international system of measurement and created the body that still maintains it. It is one of the oldest functioning international treaties.
- History
In 1875, the Metre Convention was signed, creating the international system that became the SI (France).
- Law & regulation
The Metre Convention of 1875 established international measurement standards and the institutions maintaining them. It has operated continuously through two world wars.
1875 is part of
Factors & digit properties
- Divisors (10)
- 1, 3, 5, 15, 25, 75, 125, 375, 625, 1875
- Prime factorisation
- 3 × 5^4
- Digit sum
- 21
- Digital root
- 3
Representations
- Decimal
- 1875
- Scientific notation
- 1.875 × 10^3
Roman numerals
M D C C C L X X V
Binary
1 1 1 0 1 0 1 0 0 1 1
1 × 1,024 + 1 × 512 + 1 × 256 + 0 × 128 + 1 × 64 + 0 × 32 + 1 × 16 + 0 × 8 + 0 × 4 + 1 × 2 + 1 × 1 = 1,875
Octal
3 5 2 3
3 × 512 + 5 × 64 + 2 × 8 + 3 × 1 = 1,875
Hexadecimal
7 5 3
7 × 256 + 5 × 16 + 3 × 1 = 1,875
Read as powers of two: 1,024 + 512 + 256 + 64 + 16 + 2 + 1 = 1,875.
In historical numeral systems
Egyptian
1 lotus, 8 coils of rope, 7 hobbles, 5 strokes
1 × 1,000 + 8 × 100 + 7 × 10 + 5 × 1 = 1,875. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
3 corner wedges + 1 vertical wedge (sixties place), 1 corner wedge + 5 vertical wedges (units place)
31 × 60 + 15 = 1875. Places are separated by a space on the tablet, with the higher place written first.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Deficient number
- Happy number
Related numbers & connections
1875 is a year in the 19th century, in the 1870s.
ISO 17025 accreditation is what lets a measurement cross a border without being repeated, which is the same problem the Metre Convention of 1875 addressed for units.
View 17025 →History
In 1875, the Metre Convention was signed, creating the international system that became the SI (France).
DocumentedHistoryGeography: FrancePeriod: 1875
Law & regulation
The Metre Convention of 1875 established international measurement standards and the institutions maintaining them. It has operated continuously through two world wars.
DocumentedLaw & regulationGeography: International — signatory statesPeriod: 1875
Common questions
Is 1875 a prime number?
No, 1875 is not prime.
What are the factors of 1875?
The factors of 1875 are 1, 3, 5, 15, 25, 75, 125, 375, 625, 1875.
What is 1875 in Roman numerals?
1875 in Roman numerals is MDCCCLXXV.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 2 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026