25973597166864 has 80 divisors (see below), whose sum is σ = 69871883329920. Its totient is φ = 8303958835200.

The previous prime is 25973597166859. The next prime is 25973597166899. The reversal of 25973597166864 is 46866179537952.

It is a self number, because there is not a number n which added to its sum of digits gives 25973597166864.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61575217 + ... + 61995600.

It is an arithmetic number, because the mean of its divisors is an integer number (873398541624).

Almost surely, 2^{25973597166864} is an apocalyptic number.

25973597166864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25973597166864 is an abundant number, since it is smaller than the sum of its proper divisors (43898286163056).

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

25973597166864 is a wasteful number, since it uses less digits than its factorization.

25973597166864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123571008 (or 123571002 counting only the distinct ones).

The product of its digits is 4115059200, while the sum is 78.

The spelling of 25973597166864 in words is "twenty-five trillion, nine hundred seventy-three billion, five hundred ninety-seven million, one hundred sixty-six thousand, eight hundred sixty-four".