1325
1325 is the traditional founding year of Tenochtitlan.
- Odd
- Composite
Where 1325 fits
Why 1325 is special
Built on an island in a lake, it grew to be one of the largest cities in the world, with causeways, aqueducts and floating agricultural plots. Mexico City is built directly on top of it and is still sinking into the drained lakebed.
Same number, different meanings
How 1325 is understood across different contexts — never implying one meaning because of another.
- Mathematics
Built on an island in a lake, it grew to be one of the largest cities in the world, with causeways, aqueducts and floating agricultural plots. Mexico City is built directly on top of it and is still sinking into the drained lakebed.
- History
In 1325, Tenochtitlan was founded on an island in Lake Texcoco, and Mexico City stands on the site (Mesoamerica).
- Geography
Tenochtitlan was founded on a lake island around 1325 and became one of the world's largest cities. Mexico City sits on the drained lakebed and subsides by centimetres each year as a result.
1325 is part of
Factors & digit properties
- Divisors (6)
- 1, 5, 25, 53, 265, 1325
- Prime factorisation
- 5^2 × 53
- Digit sum
- 11
- Digital root
- 2
Representations
- Decimal
- 1325
- Scientific notation
- 1.325 × 10^3
Roman numerals
M C C C X X V
Binary
1 0 1 0 0 1 0 1 1 0 1
1 × 1,024 + 0 × 512 + 1 × 256 + 0 × 128 + 0 × 64 + 1 × 32 + 0 × 16 + 1 × 8 + 1 × 4 + 0 × 2 + 1 × 1 = 1,325
Octal
2 4 5 5
2 × 512 + 4 × 64 + 5 × 8 + 5 × 1 = 1,325
Hexadecimal
5 2 d
5 × 256 + 2 × 16 + d × 1 = 1,325
Read as powers of two: 1,024 + 256 + 32 + 8 + 4 + 1 = 1,325.
In historical numeral systems
Egyptian
1 lotus, 3 coils of rope, 2 hobbles, 5 strokes
1 × 1,000 + 3 × 100 + 2 × 10 + 5 × 1 = 1,325. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
2 corner wedges + 2 vertical wedges (sixties place), 5 vertical wedges (units place)
22 × 60 + 5 = 1325. 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
Related numbers & connections
1325 is a year in the 14th century, in the 1320s.
Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
History
In 1325, Tenochtitlan was founded on an island in Lake Texcoco, and Mexico City stands on the site (Mesoamerica).
DocumentedHistoryGeography: MesoamericaPeriod: 1325
Geography
Tenochtitlan was founded on a lake island around 1325 and became one of the world's largest cities. Mexico City sits on the drained lakebed and subsides by centimetres each year as a result.
DocumentedGeographyGeography: MexicoPeriod: 1325
Common questions
Is 1325 a prime number?
No, 1325 is not prime.
What are the factors of 1325?
The factors of 1325 are 1, 5, 25, 53, 265, 1325.
What is 1325 in Roman numerals?
1325 in Roman numerals is MCCCXXV.
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