25665023 has 4 divisors (see below), whose sum is σ = 26261928. Its totient is φ = 25068120.

The previous prime is 25664983. The next prime is 25665041. The reversal of 25665023 is 32056652.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25665023 - 2⁶ = 25664959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25665043) 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, 298388 + ... + 298473.

It is an arithmetic number, because the mean of its divisors is an integer number (6565482).

Almost surely, 2^25665023 is an apocalyptic number.

25665023 is a deficient number, since it is larger than the sum of its proper divisors (596905).

25665023 is an equidigital number, since it uses as much as digits as its factorization.

25665023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596904.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 25665023 is about 5066.0658306027. The cubic root of 25665023 is about 294.9718368211.

The spelling of 25665023 in words is "twenty-five million, six hundred sixty-five thousand, twenty-three".