5256657013 has 2 divisors, whose sum is σ = 5256657014. Its totient is φ = 5256657012.

The previous prime is 5256656987. The next prime is 5256657053. The reversal of 5256657013 is 3107566525.

It is an a-pointer prime, because the next prime (5256657053) can be obtained adding 5256657013 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5241470404 + 15186609 = 72398^2 + 3897^2 .

It is a cyclic number.

It is not a de Polignac number, because 5256657013 - 2⁵ = 5256656981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5256657053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2628328506 + 2628328507.

It is an arithmetic number, because the mean of its divisors is an integer number (2628328507).

Almost surely, 2^5256657013 is an apocalyptic number.

It is an amenable number.

5256657013 is a deficient number, since it is larger than the sum of its proper divisors (1).

5256657013 is an equidigital number, since it uses as much as digits as its factorization.

5256657013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189000, while the sum is 40.

The square root of 5256657013 is about 72502.8069318699. The cubic root of 5256657013 is about 1738.7476139017.

The spelling of 5256657013 in words is "five billion, two hundred fifty-six million, six hundred fifty-seven thousand, thirteen".