8255511620 has 12 divisors (see below), whose sum is σ = 17336574444. Its totient is φ = 3302204640.

The previous prime is 8255511611. The next prime is 8255511631. The reversal of 8255511620 is 261155528.

It can be written as a sum of positive squares in 2 ways, for example, as 5181696256 + 3073815364 = 71984^2 + 55442^2 .

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 3 ways as a sum of consecutive naturals, for example, 206387771 + ... + 206387810.

It is an arithmetic number, because the mean of its divisors is an integer number (1444714537).

Almost surely, 2^8255511620 is an apocalyptic number.

It is an amenable number.

8255511620 is an abundant number, since it is smaller than the sum of its proper divisors (9081062824).

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

8255511620 is a wasteful number, since it uses less digits than its factorization.

8255511620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412775590 (or 412775588 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 35.

The square root of 8255511620 is about 90859.8460267240. The cubic root of 8255511620 is about 2021.0698854823.

The spelling of 8255511620 in words is "eight billion, two hundred fifty-five million, five hundred eleven thousand, six hundred twenty".