255420320 has 24 divisors (see below), whose sum is σ = 603430884. Its totient is φ = 102168064.

The previous prime is 255420251. The next prime is 255420337. The reversal of 255420320 is 23024552.

It can be written as a sum of positive squares in 2 ways, for example, as 250019344 + 5400976 = 15812^2 + 2324^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 798029 + ... + 798348.

Almost surely, 2^255420320 is an apocalyptic number.

255420320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255420320 is an abundant number, since it is smaller than the sum of its proper divisors (348010564).

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

255420320 is a wasteful number, since it uses less digits than its factorization.

255420320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596392 (or 1596384 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 255420320 is about 15981.8747335849. The cubic root of 255420320 is about 634.4807957537.

Adding to 255420320 its reverse (23024552), we get a palindrome (278444872).

The spelling of 255420320 in words is "two hundred fifty-five million, four hundred twenty thousand, three hundred twenty".