25921048272 has 40 divisors (see below), whose sum is σ = 76528810176. Its totient is φ = 7406013696.

The previous prime is 25921048267. The next prime is 25921048327. The reversal of 25921048272 is 27284012952.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 38572653 + ... + 38573324.

Almost surely, 2^25921048272 is an apocalyptic number.

It is an amenable number.

25921048272 is an abundant number, since it is smaller than the sum of its proper divisors (50607761904).

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

25921048272 is a wasteful number, since it uses less digits than its factorization.

25921048272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77145995 (or 77145989 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 25921048272 in words is "twenty-five billion, nine hundred twenty-one million, forty-eight thousand, two hundred seventy-two".