22520975 has 24 divisors (see below), whose sum is σ = 29091888. Its totient is φ = 17280000.

The previous prime is 22520969. The next prime is 22520989. The reversal of 22520975 is 57902522.

It is a happy number.

It is not a de Polignac number, because 22520975 - 2⁴ = 22520959 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 89600 + ... + 89850.

It is an arithmetic number, because the mean of its divisors is an integer number (1212162).

Almost surely, 2^22520975 is an apocalyptic number.

22520975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22520975 is a deficient number, since it is larger than the sum of its proper divisors (6570913).

22520975 is a wasteful number, since it uses less digits than its factorization.

22520975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 390 counting only the distinct ones).

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

The square root of 22520975 is about 4745.6269343470. The cubic root of 22520975 is about 282.3985068883.

The spelling of 22520975 in words is "twenty-two million, five hundred twenty thousand, nine hundred seventy-five".