25397996396 has 24 divisors (see below), whose sum is σ = 47067196176. Its totient is φ = 11950423040.

The previous prime is 25397996381. The next prime is 25397996401. The reversal of 25397996396 is 69369979352.

It is a Harshad number since it is a multiple of its sum of digits (68).

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, 617300 + ... + 657156.

It is an arithmetic number, because the mean of its divisors is an integer number (1961133174).

Almost surely, 2^25397996396 is an apocalyptic number.

It is an amenable number.

25397996396 is a deficient number, since it is larger than the sum of its proper divisors (21669199780).

25397996396 is a wasteful number, since it uses less digits than its factorization.

25397996396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49249 (or 49247 counting only the distinct ones).

The product of its digits is 148803480, while the sum is 68.

The spelling of 25397996396 in words is "twenty-five billion, three hundred ninety-seven million, nine hundred ninety-six thousand, three hundred ninety-six".