25172871 has 8 divisors (see below), whose sum is σ = 34278144. Its totient is φ = 16424760.

The previous prime is 25172867. The next prime is 25172911. The reversal of 25172871 is 17827152.

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

It is not a de Polignac number, because 25172871 - 2² = 25172867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25172171) 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, 89125 + ... + 89406.

It is an arithmetic number, because the mean of its divisors is an integer number (4284768).

Almost surely, 2^25172871 is an apocalyptic number.

25172871 is a deficient number, since it is larger than the sum of its proper divisors (9105273).

25172871 is a wasteful number, since it uses less digits than its factorization.

25172871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178581.

The product of its digits is 7840, while the sum is 33.

The square root of 25172871 is about 5017.2573184958. The cubic root of 25172871 is about 293.0741967895.

The spelling of 25172871 in words is "twenty-five million, one hundred seventy-two thousand, eight hundred seventy-one".