25533612 has 36 divisors (see below), whose sum is σ = 69509440. Its totient is φ = 7856352.

The previous prime is 25533559. The next prime is 25533617. The reversal of 25533612 is 21633552.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (25533617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26812 + ... + 27747.

Almost surely, 2^25533612 is an apocalyptic number.

It is an amenable number.

25533612 is an abundant number, since it is smaller than the sum of its proper divisors (43975828).

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

25533612 is a wasteful number, since it uses less digits than its factorization.

25533612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54582 (or 54577 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 25533612 is about 5053.0794571232. The cubic root of 25533612 is about 294.4675332184.

The spelling of 25533612 in words is "twenty-five million, five hundred thirty-three thousand, six hundred twelve".