255305680 has 60 divisors (see below), whose sum is σ = 690508260. Its totient is φ = 87532032.

The previous prime is 255305669. The next prime is 255305683. The reversal of 255305680 is 86503552.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 52186176 + 203119504 = 7224^2 + 14252^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255305683) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 28645 + ... + 36484.

It is an arithmetic number, because the mean of its divisors is an integer number (11508471).

Almost surely, 2^255305680 is an apocalyptic number.

255305680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255305680 is an abundant number, since it is smaller than the sum of its proper divisors (435202580).

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

255305680 is a wasteful number, since it uses less digits than its factorization.

255305680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65156 (or 65143 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 255305680 is about 15978.2877680933. The cubic root of 255305680 is about 634.3858571269.

The spelling of 255305680 in words is "two hundred fifty-five million, three hundred five thousand, six hundred eighty".