255891456 has 72 divisors (see below), whose sum is σ = 739114740. Its totient is φ = 85291008.

The previous prime is 255891431. The next prime is 255891457. The reversal of 255891456 is 654198552.

255891456 is a `hidden beast` number, since 2 + 5 + 589 + 14 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255891457) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11491 + ... + 25373.

Almost surely, 2^255891456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255891456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369557370).

255891456 is an abundant number, since it is smaller than the sum of its proper divisors (483223284).

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

255891456 is a wasteful number, since it uses less digits than its factorization.

255891456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13911 (or 13888 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The square root of 255891456 is about 15996.6076403718. The cubic root of 255891456 is about 634.8706670281.

The spelling of 255891456 in words is "two hundred fifty-five million, eight hundred ninety-one thousand, four hundred fifty-six".