Compute the greatest common factor (GCF) of two numbers.
25 and 15
The greatest common factor (GCF) of 25 and 15 is 5.
Complete the following task based on the instruction and optional input provided.### Instruction:
Compute the greatest common factor (GCF) of two numbers.

### Input:
25 and 15

### Output:
The greatest common factor (GCF) of 25 and 15 is 5.