255778080 has 96 divisors (see below), whose sum is σ = 809512704. Its totient is φ = 67885056.

The previous prime is 255778069. The next prime is 255778109. The reversal of 255778080 is 80877552.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110697 + ... + 112983.

It is an arithmetic number, because the mean of its divisors is an integer number (8432424).

Almost surely, 2^255778080 is an apocalyptic number.

255778080 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 255778080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404756352).

255778080 is an abundant number, since it is smaller than the sum of its proper divisors (553734624).

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

255778080 is a wasteful number, since it uses less digits than its factorization.

255778080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538 (or 2530 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 42.

The square root of 255778080 is about 15993.0634964037. The cubic root of 255778080 is about 634.7768906396.

The spelling of 255778080 in words is "two hundred fifty-five million, seven hundred seventy-eight thousand, eighty".