22109125 has 16 divisors (see below), whose sum is σ = 27937728. Its totient is φ = 17466000.

The previous prime is 22109123. The next prime is 22109149. The reversal of 22109125 is 52190122.

It is not a de Polignac number, because 22109125 - 2¹ = 22109123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22109096 and 22109105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22109123) 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, 9310 + ... + 11440.

It is an arithmetic number, because the mean of its divisors is an integer number (1746108).

Almost surely, 2^22109125 is an apocalyptic number.

22109125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22109125 is a deficient number, since it is larger than the sum of its proper divisors (5828603).

22109125 is an equidigital number, since it uses as much as digits as its factorization.

22109125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229 (or 2219 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 22109125 is about 4702.0341342870. The cubic root of 22109125 is about 280.6664608889. Note that the first 3 decimals are identical.

Adding to 22109125 its reverse (52190122), we get a palindrome (74299247).

The spelling of 22109125 in words is "twenty-two million, one hundred nine thousand, one hundred twenty-five".