25517485272 has 32 divisors (see below), whose sum is σ = 63799142400. Its totient is φ = 8505104544.

The previous prime is 25517485267. The next prime is 25517485303. The reversal of 25517485272 is 27258471552.

It is a super-2 number, since 2×25517485272² (a number of 22 digits) contains 22 as substring.

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, 294793 + ... + 371399.

It is an arithmetic number, because the mean of its divisors is an integer number (1993723200).

Almost surely, 2^25517485272 is an apocalyptic number.

It is an amenable number.

25517485272 is an abundant number, since it is smaller than the sum of its proper divisors (38281657128).

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

25517485272 is a wasteful number, since it uses less digits than its factorization.

25517485272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90495 (or 90491 counting only the distinct ones).

The product of its digits is 1568000, while the sum is 48.

The spelling of 25517485272 in words is "twenty-five billion, five hundred seventeen million, four hundred eighty-five thousand, two hundred seventy-two".