25138524 has 24 divisors (see below), whose sum is σ = 58777488. Its totient is φ = 8362240.

The previous prime is 25138493. The next prime is 25138549. The reversal of 25138524 is 42583152.

It is a junction number, because it is equal to n+sod(n) for n = 25138491 and 25138500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4804 + ... + 8564.

It is an arithmetic number, because the mean of its divisors is an integer number (2449062).

Almost surely, 2^25138524 is an apocalyptic number.

It is an amenable number.

25138524 is an abundant number, since it is smaller than the sum of its proper divisors (33638964).

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

25138524 is a wasteful number, since it uses less digits than its factorization.

25138524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4325 (or 4323 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 25138524 is about 5013.8332640805. The cubic root of 25138524 is about 292.9408415705.

The spelling of 25138524 in words is "twenty-five million, one hundred thirty-eight thousand, five hundred twenty-four".