25878172 has 12 divisors (see below), whose sum is σ = 45393040. Its totient is φ = 12908736.

The previous prime is 25878143. The next prime is 25878173. The reversal of 25878172 is 27187852.

It is a super-3 number, since 3×25878172³ (a number of 23 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25878173) 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, 5613 + ... + 9124.

Almost surely, 2^25878172 is an apocalyptic number.

It is an amenable number.

25878172 is a deficient number, since it is larger than the sum of its proper divisors (19514868).

25878172 is a wasteful number, since it uses less digits than its factorization.

25878172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15180 (or 15178 counting only the distinct ones).

The product of its digits is 62720, while the sum is 40.

The square root of 25878172 is about 5087.0592683789. The cubic root of 25878172 is about 295.7861707443.

The spelling of 25878172 in words is "twenty-five million, eight hundred seventy-eight thousand, one hundred seventy-two".