22536625 has 16 divisors (see below), whose sum is σ = 29100240. Its totient is φ = 17404800.

The previous prime is 22536623. The next prime is 22536649. The reversal of 22536625 is 52663522.

It can be written as a sum of positive squares in 8 ways, for example, as 4626801 + 17909824 = 2151^2 + 4232^2 .

It is not a de Polignac number, because 22536625 - 2¹ = 22536623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22536623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517 + ... + 6733.

It is an arithmetic number, because the mean of its divisors is an integer number (1818765).

Almost surely, 2^22536625 is an apocalyptic number.

22536625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22536625 is a deficient number, since it is larger than the sum of its proper divisors (6563615).

22536625 is an equidigital number, since it uses as much as digits as its factorization.

22536625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6261 (or 6251 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

The square root of 22536625 is about 4747.2755344513. The cubic root of 22536625 is about 282.4639053788.

Subtracting from 22536625 its product of digits (21600), we obtain a square (22515025 = 4745²).

The spelling of 22536625 in words is "twenty-two million, five hundred thirty-six thousand, six hundred twenty-five".