255155520 has 56 divisors (see below), whose sum is σ = 810121824. Its totient is φ = 68041216.

The previous prime is 255155477. The next prime is 255155531. The reversal of 255155520 is 25551552.

255155520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131934 + ... + 133853.

Almost surely, 2^255155520 is an apocalyptic number.

255155520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255155520 is an abundant number, since it is smaller than the sum of its proper divisors (554966304).

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

255155520 is a wasteful number, since it uses less digits than its factorization.

255155520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265807 (or 265797 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 255155520 is about 15973.5882005265. The cubic root of 255155520 is about 634.2614597610.

The spelling of 255155520 in words is "two hundred fifty-five million, one hundred fifty-five thousand, five hundred twenty".