255120520 has 32 divisors (see below), whose sum is σ = 576227520. Its totient is φ = 101656000.

The previous prime is 255120517. The next prime is 255120529. The reversal of 255120520 is 25021552.

It is a junction number, because it is equal to n+sod(n) for n = 255120491 and 255120500.

It is not an unprimeable number, because it can be changed into a prime (255120529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1606 + ... + 22645.

It is an arithmetic number, because the mean of its divisors is an integer number (18007110).

Almost surely, 2^255120520 is an apocalyptic number.

255120520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255120520 is an abundant number, since it is smaller than the sum of its proper divisors (321107000).

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

255120520 is a wasteful number, since it uses less digits than its factorization.

255120520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24525 (or 24521 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 255120520 is about 15972.4926044747. The cubic root of 255120520 is about 634.2324576238.

The spelling of 255120520 in words is "two hundred fifty-five million, one hundred twenty thousand, five hundred twenty".