6256404539 has 16 divisors (see below), whose sum is σ = 7802334720. Its totient is φ = 4873781760.

The previous prime is 6256404533. The next prime is 6256404541. The reversal of 6256404539 is 9354046526.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6256404539 is a prime.

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 6256404539.

It is not an unprimeable number, because it can be changed into a prime (6256404533) 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 15 ways as a sum of consecutive naturals, for example, 344027 + ... + 361755.

It is an arithmetic number, because the mean of its divisors is an integer number (487645920).

Almost surely, 2^6256404539 is an apocalyptic number.

6256404539 is a deficient number, since it is larger than the sum of its proper divisors (1545930181).

6256404539 is a wasteful number, since it uses less digits than its factorization.

6256404539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22330.

The product of its (nonzero) digits is 777600, while the sum is 44.

The square root of 6256404539 is about 79097.4369938748. The cubic root of 6256404539 is about 1842.6447218185.

The spelling of 6256404539 in words is "six billion, two hundred fifty-six million, four hundred four thousand, five hundred thirty-nine".