25631264 has 12 divisors (see below), whose sum is σ = 50461614. Its totient is φ = 12815616.

The previous prime is 25631233. The next prime is 25631279. The reversal of 25631264 is 46213652.

It can be written as a sum of positive squares in only one way, i.e., 24403600 + 1227664 = 4940^2 + 1108^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400457 + ... + 400520.

Almost surely, 2^25631264 is an apocalyptic number.

It is an amenable number.

25631264 is a deficient number, since it is larger than the sum of its proper divisors (24830350).

25631264 is an equidigital number, since it uses as much as digits as its factorization.

25631264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800987 (or 800979 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 25631264 is about 5062.7328588421. The cubic root of 25631264 is about 294.8424477097.

The spelling of 25631264 in words is "twenty-five million, six hundred thirty-one thousand, two hundred sixty-four".