1109125 has 16 divisors (see below), whose sum is σ = 1460160. Its totient is φ = 838800.

The previous prime is 1109123. The next prime is 1109159. The reversal of 1109125 is 5219011.

It is not a de Polignac number, because 1109125 - 2¹ = 1109123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2142 + ... + 2608.

It is an arithmetic number, because the mean of its divisors is an integer number (91260).

2^1109125 is an apocalyptic number.

It is an amenable number.

1109125 is a deficient number, since it is larger than the sum of its proper divisors (351035).

1109125 is an equidigital number, since it uses as much as digits as its factorization.

1109125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 1109125 is about 1053.1500367944. The cubic root of 1109125 is about 103.5126669678.

The spelling of 1109125 in words is "one million, one hundred nine thousand, one hundred twenty-five".