CCCXXV

CCCXXV is the Roman numeral for the number 325. In Roman numerals, CCC represents 300, XX represents 20, and V represents 5, giving a total of 325. This numeral form appears in inscriptions, historical documents, and other contexts where Roman numerals are used.

In historical chronology, 325 refers to the year 325 CE (Anno Domini). The year is best known for the First Council of Nicaea, convened by Emperor Constantine I in Nicaea (present-day Iznik, Turkey) from May to June 325. The council produced the Nicene Creed, a foundational statement of Christian orthodoxy that affirmed the divinity of Christ and his consubstantiality with the Father. It addressed the Arian controversy and established early church canons and disciplinary standards for bishops and congregations. The council also sought to standardize liturgical practices and the date of Easter, contributing to the development of unified Christian worship and governance, though the wider biblical canon would continue to be debated in subsequent centuries.

In mathematics, 325 is the 25th triangular number, since 25 × 26 / 2 = 325. Its prime factorization is 5^2 × 13, making it a composite number with multiple divisors (1, 5, 13, 25, 65, 325). Beyond numerals, CCCXXV may appear in cataloging, enumerations, or other systems that employ Roman numeral notation.