25391264 has 24 divisors (see below), whose sum is σ = 52164000. Its totient is φ = 12143296.

The previous prime is 25391243. The next prime is 25391297. The reversal of 25391264 is 46219352.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 25391264.

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, 16514 + ... + 17985.

It is an arithmetic number, because the mean of its divisors is an integer number (2173500).

Almost surely, 2^25391264 is an apocalyptic number.

It is an amenable number.

25391264 is an abundant number, since it is smaller than the sum of its proper divisors (26772736).

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

25391264 is a wasteful number, since it uses less digits than its factorization.

25391264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34532 (or 34524 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 25391264 is about 5038.9744988440. The cubic root of 25391264 is about 293.9193015901.

The spelling of 25391264 in words is "twenty-five million, three hundred ninety-one thousand, two hundred sixty-four".