22164625 has 32 divisors (see below), whose sum is σ = 32138496. Its totient is φ = 14947200.

The previous prime is 22164601. The next prime is 22164629. The reversal of 22164625 is 52646122.

It is not a de Polignac number, because 22164625 - 2²³ = 13776017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22164593 and 22164602.

It is not an unprimeable number, because it can be changed into a prime (22164629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63702 + ... + 64048.

It is an arithmetic number, because the mean of its divisors is an integer number (1004328).

Almost surely, 2^22164625 is an apocalyptic number.

22164625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22164625 is a deficient number, since it is larger than the sum of its proper divisors (9973871).

22164625 is an equidigital number, since it uses as much as digits as its factorization.

22164625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442 (or 432 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 22164625 is about 4707.9321362993. The cubic root of 22164625 is about 280.9011147185.

It can be divided in two parts, 221 and 64625, that added together give a palindrome (64846).

The spelling of 22164625 in words is "twenty-two million, one hundred sixty-four thousand, six hundred twenty-five".