25615264 has 12 divisors (see below), whose sum is σ = 50430114. Its totient is φ = 12807616.

The previous prime is 25615259. The next prime is 25615297. The reversal of 25615264 is 46251652.

It can be written as a sum of positive squares in only one way, i.e., 25603600 + 11664 = 5060^2 + 108^2 .

It is a super-2 number, since 2×25615264² = 1312283499579392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400207 + ... + 400270.

Almost surely, 2^25615264 is an apocalyptic number.

It is an amenable number.

25615264 is a deficient number, since it is larger than the sum of its proper divisors (24814850).

25615264 is an equidigital number, since it uses as much as digits as its factorization.

25615264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800487 (or 800479 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 25615264 is about 5061.1524379335. The cubic root of 25615264 is about 294.7810843539.

The spelling of 25615264 in words is "twenty-five million, six hundred fifteen thousand, two hundred sixty-four".