2725631 has 4 divisors (see below), whose sum is σ = 2777112. Its totient is φ = 2674152.

The previous prime is 2725621. The next prime is 2725643. The reversal of 2725631 is 1365272.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2725631 is a prime.

It is a super-2 number, since 2×2725631² = 14858128696322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2725631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2725621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25661 + ... + 25766.

It is an arithmetic number, because the mean of its divisors is an integer number (694278).

2^2725631 is an apocalyptic number.

2725631 is a deficient number, since it is larger than the sum of its proper divisors (51481).

2725631 is an equidigital number, since it uses as much as digits as its factorization.

2725631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51480.

The product of its digits is 2520, while the sum is 26.

The square root of 2725631 is about 1650.9485152481. The cubic root of 2725631 is about 139.6869023475.

The spelling of 2725631 in words is "two million, seven hundred twenty-five thousand, six hundred thirty-one".