23225921 has 4 divisors (see below), whose sum is σ = 23520000. Its totient is φ = 22931844.

The previous prime is 23225911. The next prime is 23225941. The reversal of 23225921 is 12952232.

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 a de Polignac number, because none of the positive numbers 2^k-23225921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23225911) 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, 146921 + ... + 147078.

It is an arithmetic number, because the mean of its divisors is an integer number (5880000).

Almost surely, 2^23225921 is an apocalyptic number.

It is an amenable number.

23225921 is a deficient number, since it is larger than the sum of its proper divisors (294079).

23225921 is an equidigital number, since it uses as much as digits as its factorization.

23225921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294078.

The product of its digits is 2160, while the sum is 26.

The square root of 23225921 is about 4819.3278576997. The cubic root of 23225921 is about 285.3148096191.

The spelling of 23225921 in words is "twenty-three million, two hundred twenty-five thousand, nine hundred twenty-one".