255515250 has 32 divisors (see below), whose sum is σ = 637767936. Its totient is φ = 68137200.

The previous prime is 255515231. The next prime is 255515263. The reversal of 255515250 is 52515552.

255515250 is digitally balanced in base 3, 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 an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 169594 + ... + 171093.

It is an arithmetic number, because the mean of its divisors is an integer number (19930248).

Almost surely, 2^255515250 is an apocalyptic number.

255515250 is an abundant number, since it is smaller than the sum of its proper divisors (382252686).

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

255515250 is a wasteful number, since it uses less digits than its factorization.

255515250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340707 (or 340697 counting only the distinct ones).

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

The square root of 255515250 is about 15984.8443846038. The cubic root of 255515250 is about 634.5593901291.

The spelling of 255515250 in words is "two hundred fifty-five million, five hundred fifteen thousand, two hundred fifty".