22525790 has 24 divisors (see below), whose sum is σ = 47167272. Its totient is φ = 7722960.

The previous prime is 22525781. The next prime is 22525801. The reversal of 22525790 is 9752522.

It is a happy number.

It is a super-2 number, since 2×22525790² = 1014822430248200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22496 + ... + 23475.

It is an arithmetic number, because the mean of its divisors is an integer number (1965303).

Almost surely, 2^22525790 is an apocalyptic number.

22525790 is an abundant number, since it is smaller than the sum of its proper divisors (24641482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22525790 is a wasteful number, since it uses less digits than its factorization.

22525790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45992 (or 45985 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 22525790 is about 4746.1342163913. The cubic root of 22525790 is about 282.4186311195.

The spelling of 22525790 in words is "twenty-two million, five hundred twenty-five thousand, seven hundred ninety".