255239520 has 192 divisors, whose sum is σ = 836075520. Its totient is φ = 65415168.

The previous prime is 255239519. The next prime is 255239531. The reversal of 255239520 is 25932552.

255239520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×255239520³ (a number of 26 digits) contains 333 as substring.

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, 2009697 + ... + 2009823.

It is an arithmetic number, because the mean of its divisors is an integer number (4354560).

Almost surely, 2^255239520 is an apocalyptic number.

255239520 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 255239520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418037760).

255239520 is an abundant number, since it is smaller than the sum of its proper divisors (580836000).

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

255239520 is a wasteful number, since it uses less digits than its factorization.

255239520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 255239520 is about 15976.2173245108. The cubic root of 255239520 is about 634.3310540711.

The spelling of 255239520 in words is "two hundred fifty-five million, two hundred thirty-nine thousand, five hundred twenty".