27985925 has 24 divisors (see below), whose sum is σ = 38167200. Its totient is φ = 20187200.

The previous prime is 27985921. The next prime is 27985933. The reversal of 27985925 is 52958972.

It is not a de Polignac number, because 27985925 - 2² = 27985921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27985925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27985921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40634 + ... + 41316.

It is an arithmetic number, because the mean of its divisors is an integer number (1590300).

Almost surely, 2^27985925 is an apocalyptic number.

27985925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27985925 is a deficient number, since it is larger than the sum of its proper divisors (10181275).

27985925 is a wasteful number, since it uses less digits than its factorization.

27985925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 848 counting only the distinct ones).

The product of its digits is 453600, while the sum is 47.

The square root of 27985925 is about 5290.1724924618. The cubic root of 27985925 is about 303.6080077194.

The spelling of 27985925 in words is "twenty-seven million, nine hundred eighty-five thousand, nine hundred twenty-five".