255298985 has 8 divisors (see below), whose sum is σ = 306445896. Its totient is φ = 204181120.

The previous prime is 255298973. The next prime is 255298987. The reversal of 255298985 is 589892552.

It can be written as a sum of positive squares in 4 ways, for example, as 13278736 + 242020249 = 3644^2 + 15557^2 .

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

It is not a de Polignac number, because 255298985 - 2⁶ = 255298921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255298987) 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 7 ways as a sum of consecutive naturals, for example, 25637 + ... + 34173.

It is an arithmetic number, because the mean of its divisors is an integer number (38305737).

Almost surely, 2^255298985 is an apocalyptic number.

It is an amenable number.

255298985 is a deficient number, since it is larger than the sum of its proper divisors (51146911).

255298985 is an equidigital number, since it uses as much as digits as its factorization.

255298985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14523.

The product of its digits is 2592000, while the sum is 53.

The square root of 255298985 is about 15978.0782636711. The cubic root of 255298985 is about 634.3803118130.

The spelling of 255298985 in words is "two hundred fifty-five million, two hundred ninety-eight thousand, nine hundred eighty-five".