6256938257 has 4 divisors (see below), whose sum is σ = 6257808180. Its totient is φ = 6256068336.

The previous prime is 6256938211. The next prime is 6256938271. The reversal of 6256938257 is 7528396526.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1654536976 + 4602401281 = 40676^2 + 67841^2 .

It is a cyclic number.

It is not a de Polignac number, because 6256938257 - 2⁸ = 6256938001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6256938199 and 6256938208.

It is not an unprimeable number, because it can be changed into a prime (6256938277) 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, 424082 + ... + 438587.

It is an arithmetic number, because the mean of its divisors is an integer number (1564452045).

Almost surely, 2^6256938257 is an apocalyptic number.

It is an amenable number.

6256938257 is a deficient number, since it is larger than the sum of its proper divisors (869923).

6256938257 is an equidigital number, since it uses as much as digits as its factorization.

6256938257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869922.

The product of its digits is 5443200, while the sum is 53.

The square root of 6256938257 is about 79100.8107227733. The cubic root of 6256938257 is about 1842.6971174442.

The spelling of 6256938257 in words is "six billion, two hundred fifty-six million, nine hundred thirty-eight thousand, two hundred fifty-seven".