2725667309 has 4 divisors (see below), whose sum is σ = 2771865120. Its totient is φ = 2679469500.

The previous prime is 2725667299. The next prime is 2725667317. The reversal of 2725667309 is 9037665272.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2725667309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2725667369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23098817 + ... + 23098934.

It is an arithmetic number, because the mean of its divisors is an integer number (692966280).

Almost surely, 2^2725667309 is an apocalyptic number.

It is an amenable number.

2725667309 is a deficient number, since it is larger than the sum of its proper divisors (46197811).

2725667309 is an equidigital number, since it uses as much as digits as its factorization.

2725667309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46197810.

The product of its (nonzero) digits is 952560, while the sum is 47.

The square root of 2725667309 is about 52207.9238143024. The cubic root of 2725667309 is about 1396.8752261603.

The spelling of 2725667309 in words is "two billion, seven hundred twenty-five million, six hundred sixty-seven thousand, three hundred nine".