2725565 has 8 divisors (see below), whose sum is σ = 3383640. Its totient is φ = 2105152.

The previous prime is 2725561. The next prime is 2725571. The reversal of 2725565 is 5655272.

It can be written as a sum of positive squares in 4 ways, for example, as 657721 + 2067844 = 811^2 + 1438^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2725565 - 2² = 2725561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2725561) 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 7 ways as a sum of consecutive naturals, for example, 9254 + ... + 9543.

It is an arithmetic number, because the mean of its divisors is an integer number (422955).

2^2725565 is an apocalyptic number.

It is an amenable number.

2725565 is a deficient number, since it is larger than the sum of its proper divisors (658075).

2725565 is a wasteful number, since it uses less digits than its factorization.

2725565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18831.

The product of its digits is 21000, while the sum is 32.

The square root of 2725565 is about 1650.9285266177. The cubic root of 2725565 is about 139.6857748520.

The spelling of 2725565 in words is "two million, seven hundred twenty-five thousand, five hundred sixty-five".