23251265 has 4 divisors (see below), whose sum is σ = 27901524. Its totient is φ = 18601008.

The previous prime is 23251253. The next prime is 23251279. The reversal of 23251265 is 56215232.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13017664 + 10233601 = 3608^2 + 3199^2 .

It is a cyclic number.

It is not a de Polignac number, because 23251265 - 2²⁴ = 6474049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2325122 + ... + 2325131.

It is an arithmetic number, because the mean of its divisors is an integer number (6975381).

Almost surely, 2^23251265 is an apocalyptic number.

It is an amenable number.

23251265 is a deficient number, since it is larger than the sum of its proper divisors (4650259).

23251265 is an equidigital number, since it uses as much as digits as its factorization.

23251265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4650258.

The product of its digits is 3600, while the sum is 26.

The square root of 23251265 is about 4821.9565531017. The cubic root of 23251265 is about 285.4185498896.

Adding to 23251265 its reverse (56215232), we get a palindrome (79466497).

The spelling of 23251265 in words is "twenty-three million, two hundred fifty-one thousand, two hundred sixty-five".