25664952 has 32 divisors (see below), whose sum is σ = 64602000. Its totient is φ = 8496384.

The previous prime is 25664929. The next prime is 25664959. The reversal of 25664952 is 25946652.

It is a super-2 number, since 2×25664952² = 1317379522324608, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25664952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25664959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13 + ... + 7164.

Almost surely, 2^25664952 is an apocalyptic number.

It is an amenable number.

25664952 is an abundant number, since it is smaller than the sum of its proper divisors (38937048).

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

25664952 is a wasteful number, since it uses less digits than its factorization.

25664952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7335 (or 7331 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 25664952 is about 5066.0588231879. The cubic root of 25664952 is about 294.9715648164.

The spelling of 25664952 in words is "twenty-five million, six hundred sixty-four thousand, nine hundred fifty-two".