255263257 has 2 divisors, whose sum is σ = 255263258. Its totient is φ = 255263256.

The previous prime is 255263243. The next prime is 255263293. The reversal of 255263257 is 752362552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170328601 + 84934656 = 13051^2 + 9216^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255263257 is a prime.

It is not a weakly prime, because it can be changed into another prime (255263227) 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, 127631628 + 127631629.

It is an arithmetic number, because the mean of its divisors is an integer number (127631629).

Almost surely, 2^255263257 is an apocalyptic number.

It is an amenable number.

255263257 is a deficient number, since it is larger than the sum of its proper divisors (1).

255263257 is an equidigital number, since it uses as much as digits as its factorization.

255263257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 126000, while the sum is 37.

The square root of 255263257 is about 15976.9601927275. The cubic root of 255263257 is about 634.3507174961.

The spelling of 255263257 in words is "two hundred fifty-five million, two hundred sixty-three thousand, two hundred fifty-seven".