23638625 has 16 divisors (see below), whose sum is σ = 30522960. Its totient is φ = 18256000.

The previous prime is 23638607. The next prime is 23638627. The reversal of 23638625 is 52683632.

It can be written as a sum of positive squares in 8 ways, for example, as 2588881 + 21049744 = 1609^2 + 4588^2 .

It is not a de Polignac number, because 23638625 - 2¹⁴ = 23622241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23638627) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 365 + ... + 6885.

It is an arithmetic number, because the mean of its divisors is an integer number (1907685).

Almost surely, 2^23638625 is an apocalyptic number.

23638625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23638625 is a deficient number, since it is larger than the sum of its proper divisors (6884335).

23638625 is an equidigital number, since it uses as much as digits as its factorization.

23638625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6565 (or 6555 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The square root of 23638625 is about 4861.9569105454. The cubic root of 23638625 is about 286.9948280582.

The spelling of 23638625 in words is "twenty-three million, six hundred thirty-eight thousand, six hundred twenty-five".