25097497512 has 32 divisors (see below), whose sum is σ = 65471734080. Its totient is φ = 8002100480.

The previous prime is 25097497493. The next prime is 25097497549. The reversal of 25097497512 is 21579479052.

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, 22732689 + ... + 22733792.

It is an arithmetic number, because the mean of its divisors is an integer number (2045991690).

Almost surely, 2^25097497512 is an apocalyptic number.

It is an amenable number.

25097497512 is an abundant number, since it is smaller than the sum of its proper divisors (40374236568).

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

25097497512 is a wasteful number, since it uses less digits than its factorization.

25097497512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45466513 (or 45466509 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 51.

The spelling of 25097497512 in words is "twenty-five billion, ninety-seven million, four hundred ninety-seven thousand, five hundred twelve".