27985825 has 48 divisors (see below), whose sum is σ = 43925760. Its totient is φ = 17233920.

The previous prime is 27985823. The next prime is 27985849. The reversal of 27985825 is 52858972.

It is not a de Polignac number, because 27985825 - 2¹ = 27985823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27985823) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68221 + ... + 68629.

It is an arithmetic number, because the mean of its divisors is an integer number (915120).

Almost surely, 2^27985825 is an apocalyptic number.

27985825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27985825 is a deficient number, since it is larger than the sum of its proper divisors (15939935).

27985825 is a wasteful number, since it uses less digits than its factorization.

27985825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 461 counting only the distinct ones).

The product of its digits is 403200, while the sum is 46.

The square root of 27985825 is about 5290.1630409658. The cubic root of 27985825 is about 303.6076460991.

The spelling of 27985825 in words is "twenty-seven million, nine hundred eighty-five thousand, eight hundred twenty-five".