525636972 has 96 divisors (see below), whose sum is σ = 1566835200. Its totient is φ = 149276736.

The previous prime is 525636971. The next prime is 525636973. The reversal of 525636972 is 279636525.

525636972 is a `hidden beast` number, since 5 + 2 + 5 + 636 + 9 + 7 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (525636971) and next prime (525636973).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (525636971) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128779 + ... + 132797.

It is an arithmetic number, because the mean of its divisors is an integer number (16321200).

Almost surely, 2^525636972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525636972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (783417600).

525636972 is an abundant number, since it is smaller than the sum of its proper divisors (1041198228).

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

525636972 is a wasteful number, since it uses less digits than its factorization.

525636972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4212 (or 4204 counting only the distinct ones).

The product of its digits is 680400, while the sum is 45.

The square root of 525636972 is about 22926.7741298247. The cubic root of 525636972 is about 807.0404479388.

The spelling of 525636972 in words is "five hundred twenty-five million, six hundred thirty-six thousand, nine hundred seventy-two".