2725945 has 4 divisors (see below), whose sum is σ = 3271140. Its totient is φ = 2180752.

The previous prime is 2725939. The next prime is 2725963. The reversal of 2725945 is 5495272.

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 962361 + 1763584 = 981^2 + 1328^2 .

It is a cyclic number.

It is not a de Polignac number, because 2725945 - 2⁷ = 2725817 is a prime.

It is a super-2 number, since 2×2725945² = 14861552286050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2725945.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272590 + ... + 272599.

It is an arithmetic number, because the mean of its divisors is an integer number (817785).

2^2725945 is an apocalyptic number.

It is an amenable number.

2725945 is a deficient number, since it is larger than the sum of its proper divisors (545195).

2725945 is an equidigital number, since it uses as much as digits as its factorization.

2725945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545194.

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

The square root of 2725945 is about 1651.0436093574. The cubic root of 2725945 is about 139.6922662435.

The spelling of 2725945 in words is "two million, seven hundred twenty-five thousand, nine hundred forty-five".