25173423 has 40 divisors (see below), whose sum is σ = 43211520. Its totient is φ = 14443920.

The previous prime is 25173409. The next prime is 25173427. The reversal of 25173423 is 32437152.

It is not a de Polignac number, because 25173423 - 2⁵ = 25173391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25173427) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16186 + ... + 17672.

It is an arithmetic number, because the mean of its divisors is an integer number (1080288).

Almost surely, 2^25173423 is an apocalyptic number.

25173423 is a deficient number, since it is larger than the sum of its proper divisors (18038097).

25173423 is a wasteful number, since it uses less digits than its factorization.

25173423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529 (or 1520 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 25173423 is about 5017.3123283288. The cubic root of 25173423 is about 293.0763389869.

The spelling of 25173423 in words is "twenty-five million, one hundred seventy-three thousand, four hundred twenty-three".