25196711172 has 48 divisors (see below), whose sum is σ = 59706028032. Its totient is φ = 8268527520.

The previous prime is 25196711153. The next prime is 25196711201. The reversal of 25196711172 is 27111769152.

It is a super-2 number, since 2×25196711172² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1457097 + ... + 1474287.

It is an arithmetic number, because the mean of its divisors is an integer number (1243875584).

Almost surely, 2^25196711172 is an apocalyptic number.

It is an amenable number.

25196711172 is an abundant number, since it is smaller than the sum of its proper divisors (34509316860).

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

25196711172 is a wasteful number, since it uses less digits than its factorization.

25196711172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19088 (or 19086 counting only the distinct ones).

The product of its digits is 52920, while the sum is 42.

The spelling of 25196711172 in words is "twenty-five billion, one hundred ninety-six million, seven hundred eleven thousand, one hundred seventy-two".