23644425 has 48 divisors (see below), whose sum is σ = 46247040. Its totient is φ = 10429440.

The previous prime is 23644421. The next prime is 23644447. The reversal of 23644425 is 52444632.

It is not a de Polignac number, because 23644425 - 2² = 23644421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23644392 and 23644401.

It is not an unprimeable number, because it can be changed into a prime (23644421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14449 + ... + 16001.

It is an arithmetic number, because the mean of its divisors is an integer number (963480).

Almost surely, 2^23644425 is an apocalyptic number.

23644425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23644425 is a deficient number, since it is larger than the sum of its proper divisors (22602615).

23644425 is a wasteful number, since it uses less digits than its factorization.

23644425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602 (or 1597 counting only the distinct ones).

The product of its digits is 23040, while the sum is 30.

The square root of 23644425 is about 4862.5533416097. The cubic root of 23644425 is about 287.0182985982.

The spelling of 23644425 in words is "twenty-three million, six hundred forty-four thousand, four hundred twenty-five".