23257265 has 4 divisors (see below), whose sum is σ = 27908724. Its totient is φ = 18605808.

The previous prime is 23257259. The next prime is 23257271. The reversal of 23257265 is 56275232.

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

It is an interprime number because it is at equal distance from previous prime (23257259) and next prime (23257271).

It can be written as a sum of positive squares in 2 ways, for example, as 3508129 + 19749136 = 1873^2 + 4444^2 .

It is a cyclic number.

It is not a de Polignac number, because 23257265 - 2⁴ = 23257249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2325722 + ... + 2325731.

It is an arithmetic number, because the mean of its divisors is an integer number (6977181).

Almost surely, 2^23257265 is an apocalyptic number.

It is an amenable number.

23257265 is a deficient number, since it is larger than the sum of its proper divisors (4651459).

23257265 is an equidigital number, since it uses as much as digits as its factorization.

23257265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4651458.

The product of its digits is 25200, while the sum is 32.

The square root of 23257265 is about 4822.5786670618. The cubic root of 23257265 is about 285.4430985757.

The spelling of 23257265 in words is "twenty-three million, two hundred fifty-seven thousand, two hundred sixty-five".