9911125 has 32 divisors (see below), whose sum is σ = 14496768. Its totient is φ = 6624000.

The previous prime is 9911123. The next prime is 9911131. The reversal of 9911125 is 5211199.

It is not a de Polignac number, because 9911125 - 2¹ = 9911123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9911093 and 9911102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9911123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41005 + ... + 41245.

It is an arithmetic number, because the mean of its divisors is an integer number (453024).

Almost surely, 2^9911125 is an apocalyptic number.

It is an amenable number.

9911125 is a deficient number, since it is larger than the sum of its proper divisors (4585643).

9911125 is a wasteful number, since it uses less digits than its factorization.

9911125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 300 counting only the distinct ones).

The product of its digits is 810, while the sum is 28.

The square root of 9911125 is about 3148.1939266824. The cubic root of 9911125 is about 214.8033175153.

It can be divided in two parts, 991 and 1125, that added together give a square (2116 = 46²).

The spelling of 9911125 in words is "nine million, nine hundred eleven thousand, one hundred twenty-five".