9972725 has 24 divisors (see below), whose sum is σ = 14433600. Its totient is φ = 6832560.

The previous prime is 9972713. The next prime is 9972733. The reversal of 9972725 is 5272799.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-9972725 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7994 + ... + 9156.

It is an arithmetic number, because the mean of its divisors is an integer number (601400).

Almost surely, 2^9972725 is an apocalyptic number.

It is an amenable number.

9972725 is a deficient number, since it is larger than the sum of its proper divisors (4460875).

9972725 is a wasteful number, since it uses less digits than its factorization.

9972725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194 (or 1175 counting only the distinct ones).

The product of its digits is 79380, while the sum is 41.

The square root of 9972725 is about 3157.9621593680. The cubic root of 9972725 is about 215.2474166302.

The spelling of 9972725 in words is "nine million, nine hundred seventy-two thousand, seven hundred twenty-five".