6256905613 has 4 divisors (see below), whose sum is σ = 7150749280. Its totient is φ = 5363061948.

The previous prime is 6256905583. The next prime is 6256905653. The reversal of 6256905613 is 3165096526.

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 not a de Polignac number, because 6256905613 - 2²⁹ = 5720034701 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 6256905613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6256905653) 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, 446921823 + ... + 446921836.

It is an arithmetic number, because the mean of its divisors is an integer number (1787687320).

Almost surely, 2^6256905613 is an apocalyptic number.

It is an amenable number.

6256905613 is a deficient number, since it is larger than the sum of its proper divisors (893843667).

6256905613 is an equidigital number, since it uses as much as digits as its factorization.

6256905613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893843666.

The product of its (nonzero) digits is 291600, while the sum is 43.

The square root of 6256905613 is about 79100.6043782220. The cubic root of 6256905613 is about 1842.6939128359.

The spelling of 6256905613 in words is "six billion, two hundred fifty-six million, nine hundred five thousand, six hundred thirteen".