23225257 has 4 divisors (see below), whose sum is σ = 25336656. Its totient is φ = 21113860.

The previous prime is 23225243. The next prime is 23225287. The reversal of 23225257 is 75252232.

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 23225257 - 2⁷ = 23225129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23225287) 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, 1055683 + ... + 1055704.

It is an arithmetic number, because the mean of its divisors is an integer number (6334164).

Almost surely, 2^23225257 is an apocalyptic number.

It is an amenable number.

23225257 is a deficient number, since it is larger than the sum of its proper divisors (2111399).

23225257 is a wasteful number, since it uses less digits than its factorization.

23225257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111398.

The product of its digits is 8400, while the sum is 28.

The square root of 23225257 is about 4819.2589679327. The cubic root of 23225257 is about 285.3120906622.

Adding to 23225257 its reverse (75252232), we get a palindrome (98477489).

The spelling of 23225257 in words is "twenty-three million, two hundred twenty-five thousand, two hundred fifty-seven".