22645525 has 12 divisors (see below), whose sum is σ = 32092192. Its totient is φ = 15528240.

The previous prime is 22645507. The next prime is 22645541. The reversal of 22645525 is 52554622.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-22645525 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64527 + ... + 64876.

Almost surely, 2^22645525 is an apocalyptic number.

22645525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22645525 is a deficient number, since it is larger than the sum of its proper divisors (9446667).

22645525 is a wasteful number, since it uses less digits than its factorization.

22645525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129420 (or 129415 counting only the distinct ones).

The product of its digits is 24000, while the sum is 31.

The square root of 22645525 is about 4758.7314486111. The cubic root of 22645525 is about 282.9181423653.

The spelling of 22645525 in words is "twenty-two million, six hundred forty-five thousand, five hundred twenty-five".