27900925 has 18 divisors (see below), whose sum is σ = 37386062. Its totient is φ = 20533440.

The previous prime is 27900889. The next prime is 27900953. The reversal of 27900925 is 52900972.

It can be written as a sum of positive squares in 9 ways, for example, as 881721 + 27019204 = 939^2 + 5198^2 .

It is a de Polignac number, because none of the positive numbers 2^k-27900925 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 95079 + ... + 95371.

Almost surely, 2^27900925 is an apocalyptic number.

27900925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27900925 is a deficient number, since it is larger than the sum of its proper divisors (9485137).

27900925 is an equidigital number, since it uses as much as digits as its factorization.

27900925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 27900925 is about 5282.1326185547. The cubic root of 27900925 is about 303.3003191001.

The spelling of 27900925 in words is "twenty-seven million, nine hundred thousand, nine hundred twenty-five".