255655120 has 120 divisors (see below), whose sum is σ = 710954496. Its totient is φ = 83745024.

The previous prime is 255655117. The next prime is 255655151. The reversal of 255655120 is 21556552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 295809 + ... + 296671.

Almost surely, 2^255655120 is an apocalyptic number.

255655120 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 255655120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355477248).

255655120 is an abundant number, since it is smaller than the sum of its proper divisors (455299376).

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

255655120 is a wasteful number, since it uses less digits than its factorization.

255655120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 900 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 255655120 is about 15989.2188677246. The cubic root of 255655120 is about 634.6751557331.

The spelling of 255655120 in words is "two hundred fifty-five million, six hundred fifty-five thousand, one hundred twenty".