It is not possible to give a sensible answer to this question. The least common multiple (LCM) refers to a multiple that is COMMON to two or more numbers. You have only one number in the question!
You need at least two numbers to find an LCM.
LCM 15 and 75 is 75.
The LCM is 75.
The LCM of 15 and 75 is 75.
The LCM is 75.
LCM of 25 and 75 is 75.
The LCM is 75.
The least common multiple of 15 and 25 is 75.
The LCM is 75.
The LCM is 675.
The LCM is 675.
The LCM is 4200.
The LCM is 225.