25139558252 has 24 divisors (see below), whose sum is σ = 45960563712. Its totient is φ = 12017739600.

The previous prime is 25139558219. The next prime is 25139558263. The reversal of 25139558252 is 25285593152.

It is a junction number, because it is equal to n+sod(n) for n = 25139558197 and 25139558206.

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, 1211024 + ... + 1231607.

It is an arithmetic number, because the mean of its divisors is an integer number (1915023488).

Almost surely, 2^25139558252 is an apocalyptic number.

It is an amenable number.

25139558252 is a deficient number, since it is larger than the sum of its proper divisors (20821005460).

25139558252 is a wasteful number, since it uses less digits than its factorization.

25139558252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2442749 (or 2442747 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 47.

The spelling of 25139558252 in words is "twenty-five billion, one hundred thirty-nine million, five hundred fifty-eight thousand, two hundred fifty-two".