25013587136 has 56 divisors (see below), whose sum is σ = 50847132240. Its totient is φ = 12204818432.

The previous prime is 25013587129. The next prime is 25013587199. The reversal of 25013587136 is 63178531052.

It is a junction number, because it is equal to n+sod(n) for n = 25013587093 and 25013587102.

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, 493136 + ... + 541488.

Almost surely, 2^25013587136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25013587136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25423566120).

25013587136 is an abundant number, since it is smaller than the sum of its proper divisors (25833545104).

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

25013587136 is a wasteful number, since it uses less digits than its factorization.

25013587136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48561 (or 48551 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 25013587136 in words is "twenty-five billion, thirteen million, five hundred eighty-seven thousand, one hundred thirty-six".