22525172 has 12 divisors (see below), whose sum is σ = 39959556. Its totient is φ = 11108160.

The previous prime is 22525157. The next prime is 22525201. The reversal of 22525172 is 27152522.

It can be written as a sum of positive squares in 2 ways, for example, as 10719076 + 11806096 = 3274^2 + 3436^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38279 + ... + 38862.

It is an arithmetic number, because the mean of its divisors is an integer number (3329963).

Almost surely, 2^22525172 is an apocalyptic number.

It is an amenable number.

22525172 is a deficient number, since it is larger than the sum of its proper divisors (17434384).

22525172 is a wasteful number, since it uses less digits than its factorization.

22525172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77218 (or 77216 counting only the distinct ones).

The product of its digits is 2800, while the sum is 26.

The square root of 22525172 is about 4746.0691103270. The cubic root of 22525172 is about 282.4160483568.

Adding to 22525172 its reverse (27152522), we get a palindrome (49677694).

The spelling of 22525172 in words is "twenty-two million, five hundred twenty-five thousand, one hundred seventy-two".