255887289 has 16 divisors (see below), whose sum is σ = 433248640. Its totient is φ = 146221200.

The previous prime is 255887251. The next prime is 255887309. The reversal of 255887289 is 982788552.

255887289 is a `hidden beast` number, since 2 + 558 + 8 + 7 + 2 + 89 = 666.

255887289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 255887289 - 2¹² = 255883193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255887239) 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, 676762 + ... + 677139.

It is an arithmetic number, because the mean of its divisors is an integer number (27078040).

Almost surely, 2^255887289 is an apocalyptic number.

It is an amenable number.

255887289 is a deficient number, since it is larger than the sum of its proper divisors (177361351).

255887289 is a wasteful number, since it uses less digits than its factorization.

255887289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353917 (or 1353911 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 54.

The square root of 255887289 is about 15996.4773934764. The cubic root of 255887289 is about 634.8672208789.

The spelling of 255887289 in words is "two hundred fifty-five million, eight hundred eighty-seven thousand, two hundred eighty-nine".