22645625 has 20 divisors (see below), whose sum is σ = 29802960. Its totient is φ = 17154000.

The previous prime is 22645589. The next prime is 22645627. The reversal of 22645625 is 52654622.

It is not a de Polignac number, because 22645625 - 2⁶ = 22645561 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22645591 and 22645600.

It is not an unprimeable number, because it can be changed into a prime (22645627) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10922 + ... + 12828.

It is an arithmetic number, because the mean of its divisors is an integer number (1490148).

Almost surely, 2^22645625 is an apocalyptic number.

22645625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22645625 is a deficient number, since it is larger than the sum of its proper divisors (7157335).

22645625 is an equidigital number, since it uses as much as digits as its factorization.

22645625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946 (or 1931 counting only the distinct ones).

The product of its digits is 28800, while the sum is 32.

The square root of 22645625 is about 4758.7419556013. The cubic root of 22645625 is about 282.9185588092.

The spelling of 22645625 in words is "twenty-two million, six hundred forty-five thousand, six hundred twenty-five".