255218720 has 24 divisors (see below), whose sum is σ = 602954604. Its totient is φ = 102087424.

The previous prime is 255218701. The next prime is 255218723. The reversal of 255218720 is 27812552.

It is a happy number.

255218720 is digitally balanced in base 3, 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 2 ways, for example, as 252301456 + 2917264 = 15884^2 + 1708^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (255218723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 797399 + ... + 797718.

Almost surely, 2^255218720 is an apocalyptic number.

255218720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255218720 is an abundant number, since it is smaller than the sum of its proper divisors (347735884).

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

255218720 is a wasteful number, since it uses less digits than its factorization.

255218720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595132 (or 1595124 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 255218720 is about 15975.5663436387. The cubic root of 255218720 is about 634.3138226168.

The spelling of 255218720 in words is "two hundred fifty-five million, two hundred eighteen thousand, seven hundred twenty".