2505280 has 28 divisors (see below), whose sum is σ = 5966460. Its totient is φ = 1001984.

The previous prime is 2505277. The next prime is 2505301. The reversal of 2505280 is 825052.

It can be written as a sum of positive squares in 2 ways, for example, as 589824 + 1915456 = 768^2 + 1384^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3595 + ... + 4234.

2^2505280 is an apocalyptic number.

2505280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2505280 is an abundant number, since it is smaller than the sum of its proper divisors (3461180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2505280 is an equidigital number, since it uses as much as digits as its factorization.

2505280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7846 (or 7836 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 2505280 is about 1582.8076320261. The cubic root of 2505280 is about 135.8163611432.

The spelling of 2505280 in words is "two million, five hundred five thousand, two hundred eighty".