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
- Binary
- 101000101
- Octal
- 505
- Hexadecimal
- 145
- Roman numeral
- CCCXXV
- Scientific notation
- 3.250 × 10^2
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: 3 August 2026