23725989 has 12 divisors (see below), whose sum is σ = 39166816. Its totient is φ = 13557672.

The previous prime is 23725987. The next prime is 23725993. The reversal of 23725989 is 98952732.

It is not a de Polignac number, because 23725989 - 2¹ = 23725987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23725987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188239 + ... + 188364.

Almost surely, 2^23725989 is an apocalyptic number.

It is an amenable number.

23725989 is a deficient number, since it is larger than the sum of its proper divisors (15440827).

23725989 is a wasteful number, since it uses less digits than its factorization.

23725989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376616 (or 376613 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 23725989 is about 4870.9330728311. The cubic root of 23725989 is about 287.3479533775.

The spelling of 23725989 in words is "twenty-three million, seven hundred twenty-five thousand, nine hundred eighty-nine".