255812580 has 120 divisors (see below), whose sum is σ = 844831680. Its totient is φ = 64618560.

The previous prime is 255812569. The next prime is 255812581. The reversal of 255812580 is 85218552.

255812580 is a `hidden beast` number, since 2 + 558 + 1 + 25 + 80 = 666.

255812580 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255812581) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 26625 + ... + 34935.

It is an arithmetic number, because the mean of its divisors is an integer number (7040264).

Almost surely, 2^255812580 is an apocalyptic number.

255812580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255812580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (422415840).

255812580 is an abundant number, since it is smaller than the sum of its proper divisors (589019100).

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

255812580 is a wasteful number, since it uses less digits than its factorization.

255812580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8351 (or 8340 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 36.

The square root of 255812580 is about 15994.1420526391. The cubic root of 255812580 is about 634.8054294653.

The spelling of 255812580 in words is "two hundred fifty-five million, eight hundred twelve thousand, five hundred eighty".