25572173 has 4 divisors (see below), whose sum is σ = 27896928. Its totient is φ = 23247420.

The previous prime is 25572137. The next prime is 25572181. The reversal of 25572173 is 37127552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25572173 - 2⁶ = 25572109 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 (25571173) 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, 1162361 + ... + 1162382.

It is an arithmetic number, because the mean of its divisors is an integer number (6974232).

Almost surely, 2^25572173 is an apocalyptic number.

It is an amenable number.

25572173 is a deficient number, since it is larger than the sum of its proper divisors (2324755).

25572173 is a wasteful number, since it uses less digits than its factorization.

25572173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2324754.

The product of its digits is 14700, while the sum is 32.

The square root of 25572173 is about 5056.8936116948. The cubic root of 25572173 is about 294.6156941501.

The spelling of 25572173 in words is "twenty-five million, five hundred seventy-two thousand, one hundred seventy-three".