255788874 has 128 divisors (see below), whose sum is σ = 663552000. Its totient is φ = 72273600.

The previous prime is 255788839. The next prime is 255788909. The reversal of 255788874 is 478887552.

255788874 is a `hidden beast` number, since 2 + 557 + 8 + 8 + 87 + 4 = 666.

255788874 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (255788839) and next prime (255788909).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 255788874.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 533767 + ... + 534245.

It is an arithmetic number, because the mean of its divisors is an integer number (5184000).

Almost surely, 2^255788874 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255788874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331776000).

255788874 is an abundant number, since it is smaller than the sum of its proper divisors (407763126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255788874 is a wasteful number, since it uses less digits than its factorization.

255788874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 555 counting only the distinct ones).

The product of its digits is 5017600, while the sum is 54.

The square root of 255788874 is about 15993.4009516425. The cubic root of 255788874 is about 634.7858198454.

The spelling of 255788874 in words is "two hundred fifty-five million, seven hundred eighty-eight thousand, eight hundred seventy-four".