257988255 has 16 divisors (see below), whose sum is σ = 471750144. Its totient is φ = 117937440.

The previous prime is 257988253. The next prime is 257988271. The reversal of 257988255 is 552889752.

It is not a de Polignac number, because 257988255 - 2¹ = 257988253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 257988198 and 257988207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257988253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1228411 + ... + 1228620.

It is an arithmetic number, because the mean of its divisors is an integer number (29484384).

Almost surely, 2^257988255 is an apocalyptic number.

257988255 is a deficient number, since it is larger than the sum of its proper divisors (213761889).

257988255 is a wasteful number, since it uses less digits than its factorization.

257988255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457046.

The product of its digits is 2016000, while the sum is 51.

The square root of 257988255 is about 16062.0127941675. The cubic root of 257988255 is about 636.6000157134.

The spelling of 257988255 in words is "two hundred fifty-seven million, nine hundred eighty-eight thousand, two hundred fifty-five".