255302889 has 12 divisors (see below), whose sum is σ = 361606704. Its totient is φ = 160189504.

The previous prime is 255302869. The next prime is 255302917. The reversal of 255302889 is 988203552.

It is a de Polignac number, because none of the positive numbers 2^k-255302889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255302889.

It is not an unprimeable number, because it can be changed into a prime (255302809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146367 + ... + 148100.

It is an arithmetic number, because the mean of its divisors is an integer number (30133892).

Almost surely, 2^255302889 is an apocalyptic number.

It is an amenable number.

255302889 is a deficient number, since it is larger than the sum of its proper divisors (106303815).

255302889 is a wasteful number, since it uses less digits than its factorization.

255302889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294504 (or 294487 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 255302889 is about 15978.2004305867. The cubic root of 255302889 is about 634.3835454178.

The spelling of 255302889 in words is "two hundred fifty-five million, three hundred two thousand, eight hundred eighty-nine".