8347981825 has 12 divisors (see below), whose sum is σ = 10358341488. Its totient is φ = 6673970000.

The previous prime is 8347981819. The next prime is 8347981841. The reversal of 8347981825 is 5281897438.

It is not a de Polignac number, because 8347981825 - 2²⁵ = 8314427393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71551 + ... + 147700.

It is an arithmetic number, because the mean of its divisors is an integer number (863195124).

Almost surely, 2^8347981825 is an apocalyptic number.

It is an amenable number.

8347981825 is a deficient number, since it is larger than the sum of its proper divisors (2010359663).

8347981825 is a wasteful number, since it uses less digits than its factorization.

8347981825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220784 (or 220779 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 55.

The square root of 8347981825 is about 91367.2907828617. The cubic root of 8347981825 is about 2028.5879042821.

The spelling of 8347981825 in words is "eight billion, three hundred forty-seven million, nine hundred eighty-one thousand, eight hundred twenty-five".