27565625 has 12 divisors (see below), whose sum is σ = 34458732. Its totient is φ = 22050000.

The previous prime is 27565621. The next prime is 27565639. The reversal of 27565625 is 52656572.

It can be written as a sum of positive squares in 6 ways, for example, as 21270544 + 6295081 = 4612^2 + 2509^2 .

It is not a de Polignac number, because 27565625 - 2² = 27565621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27565621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1286 + ... + 7535.

It is an arithmetic number, because the mean of its divisors is an integer number (2871561).

Almost surely, 2^27565625 is an apocalyptic number.

27565625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27565625 is a deficient number, since it is larger than the sum of its proper divisors (6893107).

27565625 is an frugal number, since it uses more digits than its factorization.

27565625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8846 (or 8826 counting only the distinct ones).

The product of its digits is 126000, while the sum is 38.

The square root of 27565625 is about 5250.2976106122. The cubic root of 27565625 is about 302.0804465307.

The spelling of 27565625 in words is "twenty-seven million, five hundred sixty-five thousand, six hundred twenty-five".