255289155 has 16 divisors (see below), whose sum is σ = 445595904. Its totient is φ = 123776480.

The previous prime is 255289093. The next prime is 255289157. The reversal of 255289155 is 551982552.

It is not a de Polignac number, because 255289155 - 2²¹ = 253192003 is a prime.

It is a super-2 number, since 2×255289155² = 130345105321228050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (255289157) 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 15 ways as a sum of consecutive naturals, for example, 773439 + ... + 773768.

It is an arithmetic number, because the mean of its divisors is an integer number (27849744).

Almost surely, 2^255289155 is an apocalyptic number.

255289155 is a deficient number, since it is larger than the sum of its proper divisors (190306749).

255289155 is a wasteful number, since it uses less digits than its factorization.

255289155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547226.

The product of its digits is 180000, while the sum is 42.

The square root of 255289155 is about 15977.7706517524. The cubic root of 255289155 is about 634.3721696752.

The spelling of 255289155 in words is "two hundred fifty-five million, two hundred eighty-nine thousand, one hundred fifty-five".