25139632 has 20 divisors (see below), whose sum is σ = 55666576. Its totient is φ = 10774080.

The previous prime is 25139629. The next prime is 25139657. The reversal of 25139632 is 23693152.

It is a junction number, because it is equal to n+sod(n) for n = 25139594 and 25139603.

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, 112119 + ... + 112342.

Almost surely, 2^25139632 is an apocalyptic number.

It is an amenable number.

25139632 is an abundant number, since it is smaller than the sum of its proper divisors (30526944).

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

25139632 is a wasteful number, since it uses less digits than its factorization.

25139632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224476 (or 224470 counting only the distinct ones).

The product of its digits is 9720, while the sum is 31.

The square root of 25139632 is about 5013.9437571636. The cubic root of 25139632 is about 292.9451453724.

The spelling of 25139632 in words is "twenty-five million, one hundred thirty-nine thousand, six hundred thirty-two".