27025945 has 4 divisors (see below), whose sum is σ = 32431140. Its totient is φ = 21620752.

The previous prime is 27025931. The next prime is 27025949. The reversal of 27025945 is 54952072.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11909401 + 15116544 = 3451^2 + 3888^2 .

It is a cyclic number.

It is not a de Polignac number, because 27025945 - 2⁹ = 27025433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27025945.

It is not an unprimeable number, because it can be changed into a prime (27025949) 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 3 ways as a sum of consecutive naturals, for example, 2702590 + ... + 2702599.

It is an arithmetic number, because the mean of its divisors is an integer number (8107785).

Almost surely, 2^27025945 is an apocalyptic number.

It is an amenable number.

27025945 is a deficient number, since it is larger than the sum of its proper divisors (5405195).

27025945 is an equidigital number, since it uses as much as digits as its factorization.

27025945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5405194.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 27025945 is about 5198.6483820316. The cubic root of 27025945 is about 300.0960618297.

The spelling of 27025945 in words is "twenty-seven million, twenty-five thousand, nine hundred forty-five".