8257755880 has 128 divisors (see below), whose sum is σ = 20895356160. Its totient is φ = 2910976000.

The previous prime is 8257755871. The next prime is 8257755907. The reversal of 8257755880 is 885577528.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3011310 + ... + 3014050.

It is an arithmetic number, because the mean of its divisors is an integer number (163244970).

Almost surely, 2^8257755880 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 8257755880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10447678080).

8257755880 is an abundant number, since it is smaller than the sum of its proper divisors (12637600280).

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

8257755880 is a wasteful number, since it uses less digits than its factorization.

8257755880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971 (or 2967 counting only the distinct ones).

The product of its (nonzero) digits is 6272000, while the sum is 55.

The square root of 8257755880 is about 90872.1953074757. The cubic root of 8257755880 is about 2021.2530114372.

The spelling of 8257755880 in words is "eight billion, two hundred fifty-seven million, seven hundred fifty-five thousand, eight hundred eighty".