25165823 has 8 divisors (see below), whose sum is σ = 27404400. Its totient is φ = 23018688.

The previous prime is 25165813. The next prime is 25165843. The reversal of 25165823 is 32856152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25165823 - 2⁴ = 25165807 is a prime.

It is a Duffinian number.

It is a plaindrome in base 4, base 8 and base 16.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 25165823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25165813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22286 + ... + 23387.

It is an arithmetic number, because the mean of its divisors is an integer number (3425550).

Almost surely, 2^25165823 is an apocalyptic number.

25165823 is a deficient number, since it is larger than the sum of its proper divisors (2238577).

25165823 is a wasteful number, since it uses less digits than its factorization.

25165823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45721.

The product of its digits is 14400, while the sum is 32.

The square root of 25165823 is about 5016.5548935500. The cubic root of 25165823 is about 293.0468422121.

The spelling of 25165823 in words is "twenty-five million, one hundred sixty-five thousand, eight hundred twenty-three".