23725553 has 4 divisors (see below), whose sum is σ = 24230400. Its totient is φ = 23220708.

The previous prime is 23725549. The next prime is 23725561. The reversal of 23725553 is 35552732.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23725553 - 2² = 23725549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23725253) 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, 252353 + ... + 252446.

It is an arithmetic number, because the mean of its divisors is an integer number (6057600).

Almost surely, 2^23725553 is an apocalyptic number.

It is an amenable number.

23725553 is a deficient number, since it is larger than the sum of its proper divisors (504847).

23725553 is an equidigital number, since it uses as much as digits as its factorization.

23725553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504846.

The product of its digits is 31500, while the sum is 32.

The square root of 23725553 is about 4870.8883173401. Note that the first 3 decimals coincide. The cubic root of 23725553 is about 287.3461932194.

The spelling of 23725553 in words is "twenty-three million, seven hundred twenty-five thousand, five hundred fifty-three".