9945025 has 12 divisors (see below), whose sum is σ = 12400000. Its totient is φ = 7912080.

The previous prime is 9944953. The next prime is 9945043. The reversal of 9945025 is 5205499.

It is not a de Polignac number, because 9945025 - 2⁹ = 9944513 is a prime.

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, 3976 + ... + 5974.

Almost surely, 2^9945025 is an apocalyptic number.

It is an amenable number.

9945025 is a deficient number, since it is larger than the sum of its proper divisors (2454975).

9945025 is a wasteful number, since it uses less digits than its factorization.

9945025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208 (or 2203 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 9945025 is about 3153.5733700043. The cubic root of 9945025 is about 215.0479431572.

The spelling of 9945025 in words is "nine million, nine hundred forty-five thousand, twenty-five".