25616975678164 has 24 divisors (see below), whose sum is σ = 48282317062560. Its totient is φ = 11822198174304.

The previous prime is 25616975678141. The next prime is 25616975678243. The reversal of 25616975678164 is 46187657961652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20670634 + ... + 21874849.

It is an arithmetic number, because the mean of its divisors is an integer number (2011763210940).

Almost surely, 2^{25616975678164} is an apocalyptic number.

It is an amenable number.

25616975678164 is a deficient number, since it is larger than the sum of its proper divisors (22665341384396).

25616975678164 is a wasteful number, since it uses less digits than its factorization.

25616975678164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42557079 (or 42557077 counting only the distinct ones).

The product of its digits is 914457600, while the sum is 73.

The spelling of 25616975678164 in words is "twenty-five trillion, six hundred sixteen billion, nine hundred seventy-five million, six hundred seventy-eight thousand, one hundred sixty-four".