23725121 has 24 divisors (see below), whose sum is σ = 29198400. Its totient is φ = 18871776.

The previous prime is 23725099. The next prime is 23725127. The reversal of 23725121 is 12152732.

It is a happy number.

It is not a de Polignac number, because 23725121 - 2⁶ = 23725057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (23725127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159155 + ... + 159303.

It is an arithmetic number, because the mean of its divisors is an integer number (1216600).

Almost surely, 2^23725121 is an apocalyptic number.

It is an amenable number.

23725121 is a deficient number, since it is larger than the sum of its proper divisors (5473279).

23725121 is a wasteful number, since it uses less digits than its factorization.

23725121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 222 counting only the distinct ones).

The product of its digits is 840, while the sum is 23.

The square root of 23725121 is about 4870.8439720443. The cubic root of 23725121 is about 287.3444491883.

Adding to 23725121 its reverse (12152732), we get a palindrome (35877853).

The spelling of 23725121 in words is "twenty-three million, seven hundred twenty-five thousand, one hundred twenty-one".