22564725 has 48 divisors (see below), whose sum is σ = 39616512. Its totient is φ = 11309760.

The previous prime is 22564699. The next prime is 22564741. The reversal of 22564725 is 52746522.

It is not a de Polignac number, because 22564725 - 2⁸ = 22564469 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 177612 + ... + 177738.

It is an arithmetic number, because the mean of its divisors is an integer number (825344).

Almost surely, 2^22564725 is an apocalyptic number.

22564725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22564725 is a deficient number, since it is larger than the sum of its proper divisors (17051787).

22564725 is a wasteful number, since it uses less digits than its factorization.

22564725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 261 counting only the distinct ones).

The product of its digits is 33600, while the sum is 33.

The square root of 22564725 is about 4750.2342047524. The cubic root of 22564725 is about 282.5812542003.

The spelling of 22564725 in words is "twenty-two million, five hundred sixty-four thousand, seven hundred twenty-five".