9781125 has 16 divisors (see below), whose sum is σ = 16276416. Its totient is φ = 5216400.

The previous prime is 9781117. The next prime is 9781127. The reversal of 9781125 is 5211879.

9781125 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9781125 - 2³ = 9781117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9781127) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12667 + ... + 13416.

It is an arithmetic number, because the mean of its divisors is an integer number (1017276).

Almost surely, 2^9781125 is an apocalyptic number.

It is an amenable number.

9781125 is a deficient number, since it is larger than the sum of its proper divisors (6495291).

9781125 is a wasteful number, since it uses less digits than its factorization.

9781125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26101 (or 26091 counting only the distinct ones).

The product of its digits is 5040, while the sum is 33.

The square root of 9781125 is about 3127.4790167162. The cubic root of 9781125 is about 213.8600199663.

The spelling of 9781125 in words is "nine million, seven hundred eighty-one thousand, one hundred twenty-five".