9947860825 has 12 divisors (see below), whose sum is σ = 14097540160. Its totient is φ = 6821390160.

The previous prime is 9947860789. The next prime is 9947860829. The reversal of 9947860825 is 5280687499.

It is not a de Polignac number, because 9947860825 - 2⁷ = 9947860697 is a prime.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 9947860825.

It is not an unprimeable number, because it can be changed into a prime (9947860829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28422285 + ... + 28422634.

Almost surely, 2^9947860825 is an apocalyptic number.

It is an amenable number.

9947860825 is a deficient number, since it is larger than the sum of its proper divisors (4149679335).

9947860825 is a wasteful number, since it uses less digits than its factorization.

9947860825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56844936 (or 56844931 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 58.

The square root of 9947860825 is about 99738.9634245313. The cubic root of 9947860825 is about 2150.6838152975.

The spelling of 9947860825 in words is "nine billion, nine hundred forty-seven million, eight hundred sixty thousand, eight hundred twenty-five".