23725491 has 4 divisors (see below), whose sum is σ = 31633992. Its totient is φ = 15816992.

The previous prime is 23725487. The next prime is 23725519. The reversal of 23725491 is 19452732.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23725491 - 2² = 23725487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23725441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3954246 + ... + 3954251.

It is an arithmetic number, because the mean of its divisors is an integer number (7908498).

Almost surely, 2^23725491 is an apocalyptic number.

23725491 is a deficient number, since it is larger than the sum of its proper divisors (7908501).

23725491 is an equidigital number, since it uses as much as digits as its factorization.

23725491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7908500.

The product of its digits is 15120, while the sum is 33.

The square root of 23725491 is about 4870.8819529937. The cubic root of 23725491 is about 287.3459429200.

The spelling of 23725491 in words is "twenty-three million, seven hundred twenty-five thousand, four hundred ninety-one".