27872925 has 12 divisors (see below), whose sum is σ = 46083360. Its totient is φ = 14865520.

The previous prime is 27872921. The next prime is 27872947. The reversal of 27872925 is 52927872.

It is a happy number.

It is not a de Polignac number, because 27872925 - 2² = 27872921 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27872921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185745 + ... + 185894.

It is an arithmetic number, because the mean of its divisors is an integer number (3840280).

Almost surely, 2^27872925 is an apocalyptic number.

27872925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27872925 is a deficient number, since it is larger than the sum of its proper divisors (18210435).

27872925 is a wasteful number, since it uses less digits than its factorization.

27872925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371652 (or 371647 counting only the distinct ones).

The product of its digits is 141120, while the sum is 42.

The square root of 27872925 is about 5279.4815086332. The cubic root of 27872925 is about 303.1988260328.

The spelling of 27872925 in words is "twenty-seven million, eight hundred seventy-two thousand, nine hundred twenty-five".