8225257 has 2 divisors, whose sum is σ = 8225258. Its totient is φ = 8225256.

The previous prime is 8225207. The next prime is 8225293. The reversal of 8225257 is 7525228.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6046681 + 2178576 = 2459^2 + 1476^2 .

It is a cyclic number.

It is not a de Polignac number, because 8225257 - 2¹⁹ = 7700969 is a prime.

It is not a weakly prime, because it can be changed into another prime (8225207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4112628 + 4112629.

It is an arithmetic number, because the mean of its divisors is an integer number (4112629).

Almost surely, 2^8225257 is an apocalyptic number.

It is an amenable number.

8225257 is a deficient number, since it is larger than the sum of its proper divisors (1).

8225257 is an equidigital number, since it uses as much as digits as its factorization.

8225257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11200, while the sum is 31.

The square root of 8225257 is about 2867.9708854868. The cubic root of 8225257 is about 201.8597938940.

The spelling of 8225257 in words is "eight million, two hundred twenty-five thousand, two hundred fifty-seven".