22520625 has 20 divisors (see below), whose sum is σ = 37525488. Its totient is φ = 12010000.

The previous prime is 22520581. The next prime is 22520627. The reversal of 22520625 is 52602522.

It is not a de Polignac number, because 22520625 - 2⁷ = 22520497 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22520595 and 22520604.

It is not an unprimeable number, because it can be changed into a prime (22520627) 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 19 ways as a sum of consecutive naturals, for example, 4131 + ... + 7880.

Almost surely, 2^22520625 is an apocalyptic number.

22520625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22520625 is a deficient number, since it is larger than the sum of its proper divisors (15004863).

22520625 is an equidigital number, since it uses as much as digits as its factorization.

22520625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12034 (or 12019 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 22520625 is about 4745.5900581487. The cubic root of 22520625 is about 282.3970439560.

The spelling of 22520625 in words is "twenty-two million, five hundred twenty thousand, six hundred twenty-five".