8255778280 has 16 divisors (see below), whose sum is σ = 18575501220. Its totient is φ = 3302311296.

The previous prime is 8255778259. The next prime is 8255778283. The reversal of 8255778280 is 828775528.

It can be written as a sum of positive squares in 2 ways, for example, as 8136400804 + 119377476 = 90202^2 + 10926^2 .

It is not an unprimeable number, because it can be changed into a prime (8255778283) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 103197189 + ... + 103197268.

Almost surely, 2^8255778280 is an apocalyptic number.

It is an amenable number.

8255778280 is an abundant number, since it is smaller than the sum of its proper divisors (10319722940).

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

8255778280 is a wasteful number, since it uses less digits than its factorization.

8255778280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206394468 (or 206394464 counting only the distinct ones).

The product of its (nonzero) digits is 2508800, while the sum is 52.

The square root of 8255778280 is about 90861.3134397693. The cubic root of 8255778280 is about 2021.0916460030.

The spelling of 8255778280 in words is "eight billion, two hundred fifty-five million, seven hundred seventy-eight thousand, two hundred eighty".