20525972 has 24 divisors (see below), whose sum is σ = 37091040. Its totient is φ = 9931680.

The previous prime is 20525971. The next prime is 20526031. The reversal of 20525972 is 27952502.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48779 + ... + 49197.

It is an arithmetic number, because the mean of its divisors is an integer number (1545460).

Almost surely, 2^20525972 is an apocalyptic number.

It is an amenable number.

20525972 is a deficient number, since it is larger than the sum of its proper divisors (16565068).

20525972 is a wasteful number, since it uses less digits than its factorization.

20525972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791 (or 789 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 20525972 is about 4530.5597888120. The cubic root of 20525972 is about 273.8007146646.

The spelling of 20525972 in words is "twenty million, five hundred twenty-five thousand, nine hundred seventy-two".