25218870152664 has 32 divisors (see below), whose sum is σ = 63345977173440. Its totient is φ = 8366449812000.

The previous prime is 25218870152639. The next prime is 25218870152767. The reversal of 25218870152664 is 46625107881252.

It is a happy number.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 2490009762 + ... + 2490019889.

It is an arithmetic number, because the mean of its divisors is an integer number (1979561786670).

Almost surely, 2^{25218870152664} is an apocalyptic number.

25218870152664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25218870152664 is an abundant number, since it is smaller than the sum of its proper divisors (38127107020776).

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

25218870152664 is a wasteful number, since it uses less digits than its factorization.

25218870152664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4980029871 (or 4980029867 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 57.

The spelling of 25218870152664 in words is "twenty-five trillion, two hundred eighteen billion, eight hundred seventy million, one hundred fifty-two thousand, six hundred sixty-four".