25553964 has 12 divisors (see below), whose sum is σ = 59625944. Its totient is φ = 8517984.

The previous prime is 25553929. The next prime is 25553977. The reversal of 25553964 is 46935552.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×25553964² = 1306010152226592, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 1064737 + ... + 1064760.

Almost surely, 2^25553964 is an apocalyptic number.

It is an amenable number.

25553964 is an abundant number, since it is smaller than the sum of its proper divisors (34071980).

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

25553964 is a wasteful number, since it uses less digits than its factorization.

25553964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129504 (or 2129502 counting only the distinct ones).

The product of its digits is 162000, while the sum is 39.

The square root of 25553964 is about 5055.0928774850. The cubic root of 25553964 is about 294.5457492272.

The spelling of 25553964 in words is "twenty-five million, five hundred fifty-three thousand, nine hundred sixty-four".