23139625 has 16 divisors (see below), whose sum is σ = 30401280. Its totient is φ = 17535600.

The previous prime is 23139617. The next prime is 23139629. The reversal of 23139625 is 52693132.

It is not a de Polignac number, because 23139625 - 2³ = 23139617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23139629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2497 + ... + 7246.

It is an arithmetic number, because the mean of its divisors is an integer number (1900080).

Almost surely, 2^23139625 is an apocalyptic number.

23139625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23139625 is a deficient number, since it is larger than the sum of its proper divisors (7261655).

23139625 is an equidigital number, since it uses as much as digits as its factorization.

23139625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9777 (or 9767 counting only the distinct ones).

The product of its digits is 9720, while the sum is 31.

The square root of 23139625 is about 4810.3664101605. The cubic root of 23139625 is about 284.9610083109.

The spelling of 23139625 in words is "twenty-three million, one hundred thirty-nine thousand, six hundred twenty-five".