255013889 has 24 divisors (see below), whose sum is σ = 295014720. Its totient is φ = 219066624.

The previous prime is 255013867. The next prime is 255013897. The reversal of 255013889 is 988310552.

It is not a de Polignac number, because 255013889 - 2¹² = 255009793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255018889) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 386642 + ... + 387300.

It is an arithmetic number, because the mean of its divisors is an integer number (12292280).

Almost surely, 2^255013889 is an apocalyptic number.

It is an amenable number.

255013889 is a deficient number, since it is larger than the sum of its proper divisors (40000831).

255013889 is a wasteful number, since it uses less digits than its factorization.

255013889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 255013889 is about 15969.1542982088. The cubic root of 255013889 is about 634.1440833586.

The spelling of 255013889 in words is "two hundred fifty-five million, thirteen thousand, eight hundred eighty-nine".