255388263 has 32 divisors (see below), whose sum is σ = 391007232. Its totient is φ = 146880000.

The previous prime is 255388241. The next prime is 255388279. The reversal of 255388263 is 362883552.

It is not a de Polignac number, because 255388263 - 2⁹ = 255387751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255388213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98838 + ... + 101388.

It is an arithmetic number, because the mean of its divisors is an integer number (12218976).

Almost surely, 2^255388263 is an apocalyptic number.

255388263 is a deficient number, since it is larger than the sum of its proper divisors (135618969).

255388263 is a wasteful number, since it uses less digits than its factorization.

255388263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2735.

The product of its digits is 345600, while the sum is 42.

The square root of 255388263 is about 15980.8717847306. The cubic root of 255388263 is about 634.4542507476.

The spelling of 255388263 in words is "two hundred fifty-five million, three hundred eighty-eight thousand, two hundred sixty-three".