255625656 has 128 divisors (see below), whose sum is σ = 756483840. Its totient is φ = 70963200.

The previous prime is 255625607. The next prime is 255625663. The reversal of 255625656 is 656526552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 723976 + ... + 724328.

It is an arithmetic number, because the mean of its divisors is an integer number (5910030).

Almost surely, 2^255625656 is an apocalyptic number.

255625656 is a gapful number since it is divisible by the number (26) 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 255625656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378241920).

255625656 is an abundant number, since it is smaller than the sum of its proper divisors (500858184).

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

255625656 is a wasteful number, since it uses less digits than its factorization.

255625656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597 (or 593 counting only the distinct ones).

The product of its digits is 540000, while the sum is 42.

The square root of 255625656 is about 15988.2974703375. The cubic root of 255625656 is about 634.6507729015.

The spelling of 255625656 in words is "two hundred fifty-five million, six hundred twenty-five thousand, six hundred fifty-six".