22206625 has 32 divisors (see below), whose sum is σ = 32497920. Its totient is φ = 14832000.

The previous prime is 22206617. The next prime is 22206637. The reversal of 22206625 is 52660222.

It is not a de Polignac number, because 22206625 - 2³ = 22206617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 22206625.

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 31 ways as a sum of consecutive naturals, for example, 35566 + ... + 36184.

It is an arithmetic number, because the mean of its divisors is an integer number (1015560).

Almost surely, 2^22206625 is an apocalyptic number.

22206625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22206625 is a deficient number, since it is larger than the sum of its proper divisors (10291295).

22206625 is an equidigital number, since it uses as much as digits as its factorization.

22206625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 22206625 is about 4712.3905822841. The cubic root of 22206625 is about 281.0784303388.

Adding to 22206625 its reverse (52660222), we get a palindrome (74866847).

The spelling of 22206625 in words is "twenty-two million, two hundred six thousand, six hundred twenty-five".