25315502572 has 24 divisors (see below), whose sum is σ = 44430724800. Its totient is φ = 12621048336.

The previous prime is 25315502567. The next prime is 25315502581. The reversal of 25315502572 is 27520551352.

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, 3503179 + ... + 3510397.

It is an arithmetic number, because the mean of its divisors is an integer number (1851280200).

Almost surely, 2^25315502572 is an apocalyptic number.

It is an amenable number.

25315502572 is a deficient number, since it is larger than the sum of its proper divisors (19115222228).

25315502572 is a wasteful number, since it uses less digits than its factorization.

25315502572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9645 (or 9643 counting only the distinct ones).

The product of its (nonzero) digits is 105000, while the sum is 37.

The spelling of 25315502572 in words is "twenty-five billion, three hundred fifteen million, five hundred two thousand, five hundred seventy-two".