8125398736 has 240 divisors, whose sum is σ = 20414985024. Its totient is φ = 3103930368.

The previous prime is 8125398719. The next prime is 8125398751. The reversal of 8125398736 is 6378935218.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49848991 + ... + 49849153.

Almost surely, 2^8125398736 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 8125398736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10207492512).

8125398736 is an abundant number, since it is smaller than the sum of its proper divisors (12289586288).

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

8125398736 is a wasteful number, since it uses less digits than its factorization.

8125398736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 325 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 52.

The square root of 8125398736 is about 90140.9936488388. The cubic root of 8125398736 is about 2010.3957650767.

The spelling of 8125398736 in words is "eight billion, one hundred twenty-five million, three hundred ninety-eight thousand, seven hundred thirty-six".