255445280 has 48 divisors (see below), whose sum is σ = 607393080. Its totient is φ = 101517312.

The previous prime is 255445249. The next prime is 255445303. The reversal of 255445280 is 82544552.

It can be written as a sum of positive squares in 4 ways, for example, as 232135696 + 23309584 = 15236^2 + 4828^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 255445280.

It is an unprimeable number.

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, 20036 + ... + 30204.

Almost surely, 2^255445280 is an apocalyptic number.

255445280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255445280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303696540).

255445280 is an abundant number, since it is smaller than the sum of its proper divisors (351947800).

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

255445280 is a wasteful number, since it uses less digits than its factorization.

255445280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10341 (or 10333 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 35.

The square root of 255445280 is about 15982.6555991174. The cubic root of 255445280 is about 634.5014625051.

The spelling of 255445280 in words is "two hundred fifty-five million, four hundred forty-five thousand, two hundred eighty".