22157525 has 24 divisors (see below), whose sum is σ = 29998080. Its totient is φ = 16136640.

The previous prime is 22157519. The next prime is 22157543. The reversal of 22157525 is 52575122.

It is not a de Polignac number, because 22157525 - 2⁶ = 22157461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25244 + ... + 26106.

It is an arithmetic number, because the mean of its divisors is an integer number (1249920).

Almost surely, 2^22157525 is an apocalyptic number.

22157525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22157525 is a deficient number, since it is larger than the sum of its proper divisors (7840555).

22157525 is a wasteful number, since it uses less digits than its factorization.

22157525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965 (or 960 counting only the distinct ones).

The product of its digits is 7000, while the sum is 29.

The square root of 22157525 is about 4707.1780293505. The cubic root of 22157525 is about 280.8711178066.

The spelling of 22157525 in words is "twenty-two million, one hundred fifty-seven thousand, five hundred twenty-five".