9983606725 has 12 divisors (see below), whose sum is σ = 12386136676. Its totient is φ = 7982714880.

The previous prime is 9983606701. The next prime is 9983606741. The reversal of 9983606725 is 5276063899.

It is a Cunningham number, because it is equal to 99918²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 1 + 9983606724 = 1^2 + 99918^2 .

It is not a de Polignac number, because 9983606725 - 2⁵ = 9983606693 is a prime.

It is a Duffinian number.

It is a congruent 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, 54972 + ... + 151621.

Almost surely, 2^9983606725 is an apocalyptic number.

It is an amenable number.

9983606725 is a deficient number, since it is larger than the sum of its proper divisors (2402529951).

9983606725 is a wasteful number, since it uses less digits than its factorization.

9983606725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208536 (or 208531 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 55.

The square root of 9983606725 is about 99918.0000050041. Note that the first 5 decimals coincide. The cubic root of 9983606725 is about 2153.2567714543.

The spelling of 9983606725 in words is "nine billion, nine hundred eighty-three million, six hundred six thousand, seven hundred twenty-five".