8256257 has 2 divisors, whose sum is σ = 8256258. Its totient is φ = 8256256.

The previous prime is 8256253. The next prime is 8256299. The reversal of 8256257 is 7526528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5973136 + 2283121 = 2444^2 + 1511^2 .

It is a cyclic number.

It is not a de Polignac number, because 8256257 - 2² = 8256253 is a prime.

It is not a weakly prime, because it can be changed into another prime (8256251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4128128 + 4128129.

It is an arithmetic number, because the mean of its divisors is an integer number (4128129).

Almost surely, 2^8256257 is an apocalyptic number.

It is an amenable number.

8256257 is a deficient number, since it is larger than the sum of its proper divisors (1).

8256257 is an equidigital number, since it uses as much as digits as its factorization.

8256257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33600, while the sum is 35.

The square root of 8256257 is about 2873.3703207209. The cubic root of 8256257 is about 202.1130710291.

The spelling of 8256257 in words is "eight million, two hundred fifty-six thousand, two hundred fifty-seven".