9871925 has 24 divisors (see below), whose sum is σ = 14731200. Its totient is φ = 6410880.

The previous prime is 9871909. The next prime is 9871931. The reversal of 9871925 is 5291789.

It is not a de Polignac number, because 9871925 - 2⁴ = 9871909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1841 + ... + 4809.

It is an arithmetic number, because the mean of its divisors is an integer number (613800).

Almost surely, 2^9871925 is an apocalyptic number.

9871925 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

9871925 is a deficient number, since it is larger than the sum of its proper divisors (4859275).

9871925 is a wasteful number, since it uses less digits than its factorization.

9871925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3005 (or 3000 counting only the distinct ones).

The product of its digits is 45360, while the sum is 41.

The square root of 9871925 is about 3141.9619666699. The cubic root of 9871925 is about 214.5197501208.

The spelling of 9871925 in words is "nine million, eight hundred seventy-one thousand, nine hundred twenty-five".