8591425920 has 768 divisors, whose sum is σ = 38288678400. Its totient is φ = 1782190080.

The previous prime is 8591425877. The next prime is 8591425967. The reversal of 8591425920 is 295241958.

It is a happy number.

8591425920 is a `hidden beast` number, since 8 + 59 + 1 + 4 + 2 + 592 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14635867 + ... + 14636453.

It is an arithmetic number, because the mean of its divisors is an integer number (49855050).

Almost surely, 2^8591425920 is an apocalyptic number.

8591425920 is a gapful number since it is divisible by the number (80) 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 8591425920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19144339200).

8591425920 is an abundant number, since it is smaller than the sum of its proper divisors (29697252480).

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

8591425920 is a wasteful number, since it uses less digits than its factorization.

8591425920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 8591425920 is about 92689.9450857535. The cubic root of 8591425920 is about 2048.1185132427.

The spelling of 8591425920 in words is "eight billion, five hundred ninety-one million, four hundred twenty-five thousand, nine hundred twenty".