2725645 has 16 divisors (see below), whose sum is σ = 3709440. Its totient is φ = 1905984.

The previous prime is 2725643. The next prime is 2725649. The reversal of 2725645 is 5465272.

2725645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2725645 - 2¹ = 2725643 is a prime.

It is a super-3 number, since 3×2725645³ = 60747600331943133375, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2725643) 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 15 ways as a sum of consecutive naturals, for example, 132 + ... + 2338.

It is an arithmetic number, because the mean of its divisors is an integer number (231840).

2^2725645 is an apocalyptic number.

It is an amenable number.

2725645 is a deficient number, since it is larger than the sum of its proper divisors (983795).

2725645 is a wasteful number, since it uses less digits than its factorization.

2725645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244.

The product of its digits is 16800, while the sum is 31.

The square root of 2725645 is about 1650.9527552295. The cubic root of 2725645 is about 139.6871415109.

The spelling of 2725645 in words is "two million, seven hundred twenty-five thousand, six hundred forty-five".