255700317257 has 8 divisors (see below), whose sum is σ = 318795200832. Its totient is φ = 199247000400.

The previous prime is 255700317241. The next prime is 255700317269. The reversal of 255700317257 is 752713007552.

255700317257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 255700317257 - 2⁴ = 255700317241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255700317287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1660391594 + ... + 1660391747.

It is an arithmetic number, because the mean of its divisors is an integer number (39849400104).

Almost surely, 2^255700317257 is an apocalyptic number.

It is an amenable number.

255700317257 is a deficient number, since it is larger than the sum of its proper divisors (63094883575).

255700317257 is a wasteful number, since it uses less digits than its factorization.

255700317257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320783359.

The product of its (nonzero) digits is 514500, while the sum is 44.

The spelling of 255700317257 in words is "two hundred fifty-five billion, seven hundred million, three hundred seventeen thousand, two hundred fifty-seven".