255705912 has 216 divisors, whose sum is σ = 886977000. Its totient is φ = 66306240.

The previous prime is 255705911. The next prime is 255705917. The reversal of 255705912 is 219507552.

255705912 is a `hidden beast` number, since 25 + 570 + 59 + 12 = 666.

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 (255705911) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 426589 + ... + 427187.

It is an arithmetic number, because the mean of its divisors is an integer number (4106375).

Almost surely, 2^255705912 is an apocalyptic number.

255705912 is a gapful number since it is divisible by the number (22) 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 255705912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (443488500).

255705912 is an abundant number, since it is smaller than the sum of its proper divisors (631271088).

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

255705912 is a wasteful number, since it uses less digits than its factorization.

255705912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 622 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 255705912 is about 15990.8071090861. The cubic root of 255705912 is about 634.7171840796.

The spelling of 255705912 in words is "two hundred fifty-five million, seven hundred five thousand, nine hundred twelve".