25638232 has 8 divisors (see below), whose sum is σ = 48071700. Its totient is φ = 12819112.

The previous prime is 25638211. The next prime is 25638241. The reversal of 25638232 is 23283652.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 25638194 and 25638203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1602382 + ... + 1602397.

Almost surely, 2^25638232 is an apocalyptic number.

It is an amenable number.

25638232 is a deficient number, since it is larger than the sum of its proper divisors (22433468).

25638232 is a wasteful number, since it uses less digits than its factorization.

25638232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3204785 (or 3204781 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 25638232 is about 5063.4209779555. The cubic root of 25638232 is about 294.8691634689.

The spelling of 25638232 in words is "twenty-five million, six hundred thirty-eight thousand, two hundred thirty-two".