27225605 has 16 divisors (see below), whose sum is σ = 35944128. Its totient is φ = 19795600.

The previous prime is 27225587. The next prime is 27225607. The reversal of 27225605 is 50652272.

It is not a de Polignac number, because 27225605 - 2¹⁶ = 27160069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27225607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4610 + ... + 8700.

It is an arithmetic number, because the mean of its divisors is an integer number (2246508).

Almost surely, 2^27225605 is an apocalyptic number.

It is an amenable number.

27225605 is a deficient number, since it is larger than the sum of its proper divisors (8718523).

27225605 is an equidigital number, since it uses as much as digits as its factorization.

27225605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4129 (or 4107 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 27225605 is about 5217.8161140462. The cubic root of 27225605 is about 300.8332575376.

Adding to 27225605 its reverse (50652272), we get a palindrome (77877877).

The spelling of 27225605 in words is "twenty-seven million, two hundred twenty-five thousand, six hundred five".