255020257 has 2 divisors, whose sum is σ = 255020258. Its totient is φ = 255020256.

The previous prime is 255020221. The next prime is 255020263. The reversal of 255020257 is 752020552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180526096 + 74494161 = 13436^2 + 8631^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255020257 is a prime.

It is not a weakly prime, because it can be changed into another prime (255021257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127510128 + 127510129.

It is an arithmetic number, because the mean of its divisors is an integer number (127510129).

Almost surely, 2^255020257 is an apocalyptic number.

It is an amenable number.

255020257 is a deficient number, since it is larger than the sum of its proper divisors (1).

255020257 is an equidigital number, since it uses as much as digits as its factorization.

255020257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 255020257 is about 15969.3536813485. The cubic root of 255020257 is about 634.1493617586.

The spelling of 255020257 in words is "two hundred fifty-five million, twenty thousand, two hundred fifty-seven".