325
325 is the year of the First Council of Nicaea.
- Odd
- Composite
Where 325 fits
Why 325 is special
It produced the Nicene Creed and settled the date of Easter, convened by an emperor who was not yet baptised. Most Christian denominations still recite a version of what was agreed there.
325 is part of
Factors & digit properties
- Divisors (6)
- 1, 5, 13, 25, 65, 325
- Prime factorisation
- 5^2 × 13
- Digit sum
- 10
- Digital root
- 1
Representations
- Decimal
- 325
- Scientific notation
- 3.250 × 10^2
Roman numerals
C C C X X V
Binary
1 0 1 0 0 0 1 0 1
1 × 256 + 0 × 128 + 1 × 64 + 0 × 32 + 0 × 16 + 0 × 8 + 1 × 4 + 0 × 2 + 1 × 1 = 325
Octal
5 0 5
5 × 64 + 0 × 8 + 5 × 1 = 325
Hexadecimal
1 4 5
1 × 256 + 4 × 16 + 5 × 1 = 325
Read as powers of two: 256 + 64 + 4 + 1 = 325.
In historical numeral systems
Egyptian
3 coils of rope, 2 hobbles, 5 strokes
3 × 100 + 2 × 10 + 5 × 1 = 325. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
5 vertical wedges (sixties place), 2 corner wedges + 5 vertical wedges (units place)
5 × 60 + 25 = 325. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
tau, then kappa, then epsilon, marked as a numeral
tau-kappa-epsilon + keraia
tau + kappa + epsilon written in descending order and added — the letters carry their values wherever they stand, so this is addition, not place value.
Hebrew numerals
shin, then kaf, then he
shin-kaf-he
shin (300) + kaf (20) + he (5) = 325, written in descending order.
Maya
3 bars + 1 dot (upper, twenties place) over 1 bar (lower, units place)
16 × 20 + 5 = 325. Places stack vertically with the smallest at the bottom, so the upper group is worth twenty times the lower.
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
- Triangular number
- Deficient number
- Hexagonal number
Religion & belief
Constantine called and presided over the council that fixed core Christian doctrine in 325, without himself being baptised until near death. The creed it produced is still recited weekly.
DocumentedReligion & beliefGeography: Nicaea, Roman EmpirePeriod: 325
Common questions
Is 325 a prime number?
No, 325 is not prime.
What are the factors of 325?
The factors of 325 are 1, 5, 13, 25, 65, 325.
What is 325 in Roman numerals?
325 in Roman numerals is CCCXXV.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 15 July 2026