25171268652 has 36 divisors (see below), whose sum is σ = 63632665096. Its totient is φ = 8389725120.

The previous prime is 25171268597. The next prime is 25171268669. The reversal of 25171268652 is 25686217152.

25171268652 is a `hidden beast` number, since 2 + 517 + 1 + 2 + 6 + 86 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 25171268598 and 25171268607.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 590952 + ... + 632112.

Almost surely, 2^25171268652 is an apocalyptic number.

It is an amenable number.

25171268652 is an abundant number, since it is smaller than the sum of its proper divisors (38461396444).

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

25171268652 is a wasteful number, since it uses less digits than its factorization.

25171268652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58158 (or 58153 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The spelling of 25171268652 in words is "twenty-five billion, one hundred seventy-one million, two hundred sixty-eight thousand, six hundred fifty-two".