8325557856 has 216 divisors, whose sum is σ = 30045552264. Its totient is φ = 2162442240.

The previous prime is 8325557837. The next prime is 8325557879. The reversal of 8325557856 is 6587555238.

It is a happy number.

8325557856 is a `hidden beast` number, since 8 + 3 + 2 + 5 + 557 + 85 + 6 = 666.

It is a super-2 number, since 2×8325557856² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 128416 + ... + 182048.

It is an arithmetic number, because the mean of its divisors is an integer number (139099779).

Almost surely, 2^8325557856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8325557856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15022776132).

8325557856 is an abundant number, since it is smaller than the sum of its proper divisors (21719994408).

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

8325557856 is a wasteful number, since it uses less digits than its factorization.

8325557856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53674 (or 53656 counting only the distinct ones).

The product of its digits is 10080000, while the sum is 54.

The square root of 8325557856 is about 91244.4949353110. The cubic root of 8325557856 is about 2026.7699086564.

The spelling of 8325557856 in words is "eight billion, three hundred twenty-five million, five hundred fifty-seven thousand, eight hundred fifty-six".