27601225 has 12 divisors (see below), whose sum is σ = 34356060. Its totient is φ = 21996800.

The previous prime is 27601213. The next prime is 27601229. The reversal of 27601225 is 52210672.

It can be written as a sum of positive squares in 6 ways, for example, as 1713481 + 25887744 = 1309^2 + 5088^2 .

It is not a de Polignac number, because 27601225 - 2²³ = 19212617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 27601225.

It is not an unprimeable number, because it can be changed into a prime (27601229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5061 + ... + 8989.

It is an arithmetic number, because the mean of its divisors is an integer number (2863005).

Almost surely, 2^27601225 is an apocalyptic number.

27601225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27601225 is a deficient number, since it is larger than the sum of its proper divisors (6754835).

27601225 is a wasteful number, since it uses less digits than its factorization.

27601225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4220 (or 4215 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 27601225 is about 5253.6868007143. The cubic root of 27601225 is about 302.2104325516.

Adding to 27601225 its reverse (52210672), we get a palindrome (79811897).

The spelling of 27601225 in words is "twenty-seven million, six hundred one thousand, two hundred twenty-five".