255808520 has 96 divisors (see below), whose sum is σ = 670080600. Its totient is φ = 87521280.

The previous prime is 255808519. The next prime is 255808523. The reversal of 255808520 is 25808552.

255808520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 198866404 + 56942116 = 14102^2 + 7546^2 .

It is not an unprimeable number, because it can be changed into a prime (255808523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80726 + ... + 83834.

Almost surely, 2^255808520 is an apocalyptic number.

255808520 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 255808520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335040300).

255808520 is an abundant number, since it is smaller than the sum of its proper divisors (414272080).

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

255808520 is a wasteful number, since it uses less digits than its factorization.

255808520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3159 (or 3144 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 35.

The square root of 255808520 is about 15994.0151306668. The cubic root of 255808520 is about 634.8020711164.

The spelling of 255808520 in words is "two hundred fifty-five million, eight hundred eight thousand, five hundred twenty".