9963925 has 6 divisors (see below), whose sum is σ = 12355298. Its totient is φ = 7971120.

The previous prime is 9963913. The next prime is 9963929. The reversal of 9963925 is 5293699.

It can be written as a sum of positive squares in 3 ways, for example, as 2792241 + 7171684 = 1671^2 + 2678^2 .

It is not a de Polignac number, because 9963925 - 2⁷ = 9963797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9963929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 199254 + ... + 199303.

Almost surely, 2^9963925 is an apocalyptic number.

It is an amenable number.

9963925 is a deficient number, since it is larger than the sum of its proper divisors (2391373).

9963925 is a wasteful number, since it uses less digits than its factorization.

9963925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398567 (or 398562 counting only the distinct ones).

The product of its digits is 131220, while the sum is 43.

The square root of 9963925 is about 3156.5685482815. The cubic root of 9963925 is about 215.1840860732.

The spelling of 9963925 in words is "nine million, nine hundred sixty-three thousand, nine hundred twenty-five".