9881725 has 12 divisors (see below), whose sum is σ = 14004064. Its totient is φ = 6775920.

The previous prime is 9881719. The next prime is 9881741. The reversal of 9881725 is 5271889.

It is not a de Polignac number, because 9881725 - 2⁵ = 9881693 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 28059 + ... + 28408.

Almost surely, 2^9881725 is an apocalyptic number.

It is an amenable number.

9881725 is a deficient number, since it is larger than the sum of its proper divisors (4122339).

9881725 is a wasteful number, since it uses less digits than its factorization.

9881725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56484 (or 56479 counting only the distinct ones).

The product of its digits is 40320, while the sum is 40.

The square root of 9881725 is about 3143.5211149283. The cubic root of 9881725 is about 214.5907122440.

The spelling of 9881725 in words is "nine million, eight hundred eighty-one thousand, seven hundred twenty-five".