25552812 has 12 divisors (see below), whose sum is σ = 59623256. Its totient is φ = 8517600.

The previous prime is 25552801. The next prime is 25552831. The reversal of 25552812 is 21825552.

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

It is a super-2 number, since 2×25552812² = 1305892402214688, 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 25552812.

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, 1064689 + ... + 1064712.

Almost surely, 2^25552812 is an apocalyptic number.

It is an amenable number.

25552812 is an abundant number, since it is smaller than the sum of its proper divisors (34070444).

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

25552812 is a wasteful number, since it uses less digits than its factorization.

25552812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129408 (or 2129406 counting only the distinct ones).

The product of its digits is 8000, while the sum is 30.

The square root of 25552812 is about 5054.9789317068. The cubic root of 25552812 is about 294.5413230150.

The spelling of 25552812 in words is "twenty-five million, five hundred fifty-two thousand, eight hundred twelve".