2505

2505 is the natural number that follows 2504 and precedes 2506. In number theory, it factorizes as 3 × 5 × 167, making it a squarefree composite number. It has eight positive divisors: 1, 3, 5, 15, 167, 501, 835, and 2505. The sum of all divisors is 4032, so the sum of its proper divisors is 1527. 2505 is not a prime, not a power, and it is not a Fibonacci number. It is divisible by 3 and by 5, but not by 2.

In different numeral systems, 2505 is represented as binary 100111001001, hexadecimal 0x9C9, and in Roman numerals it is MMDV. The number lies near 50 squared (50^2 = 2500), being 5 greater than 2500.

As a year, 2505 AD would fall in the far future and has no widely noted historical events associated with it. In other uses, 2505 may function as a catalog or model number, a designation within a postal or administrative system, or other context-dependent identifiers. Without additional context, its meaning is ambiguous and can vary across domains.

See also: 2505 (disambiguation).