22644525 has 12 divisors (see below), whose sum is σ = 37439072. Its totient is φ = 12077040.

The previous prime is 22644521. The next prime is 22644541. The reversal of 22644525 is 52544622.

It is a happy number.

It is not a de Polignac number, because 22644525 - 2² = 22644521 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22644492 and 22644501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22644521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150889 + ... + 151038.

Almost surely, 2^22644525 is an apocalyptic number.

22644525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22644525 is a deficient number, since it is larger than the sum of its proper divisors (14794547).

22644525 is a wasteful number, since it uses less digits than its factorization.

22644525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301940 (or 301935 counting only the distinct ones).

The product of its digits is 19200, while the sum is 30.

The square root of 22644525 is about 4758.6263774329. The cubic root of 22644525 is about 282.9139778588.

The spelling of 22644525 in words is "twenty-two million, six hundred forty-four thousand, five hundred twenty-five".