25111473156 has 243 divisors, whose sum is σ = 81399948903. Its totient is φ = 6522460560.

The previous prime is 25111473137. The next prime is 25111473187. The reversal of 25111473156 is 65137411152.

The square root of 25111473156 is 158466.

It is a perfect power (a square), and thus also a powerful number.

25111473156 is a `hidden beast` number, since 25 + 1 + 11 + 473 + 156 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 25111473156.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 2282861191 + ... + 2282861201.

Almost surely, 2^25111473156 is an apocalyptic number.

25111473156 is the 158466-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25111473156

25111473156 is an abundant number, since it is smaller than the sum of its proper divisors (56288475747).

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

25111473156 is an frugal number, since it uses more digits than its factorization.

25111473156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 23 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

Multiplying 25111473156 by its sum of digits (36), we get a square (904013033616 = 950796²).

25111473156 divided by its sum of digits (36) gives a square (697540921 = 26411²).

The spelling of 25111473156 in words is "twenty-five billion, one hundred eleven million, four hundred seventy-three thousand, one hundred fifty-six".