Determine if 25110 is divisible by 45.

To determine if 25110 is divisible by 45, we need to check if it is divisible by both 5 and 9. This is because 45 = 5 * 9, so a number must be divisible by both 5 and 9 to be divisible by 45.

Step 1: Check divisibility by 5
A number is divisible by 5 if its last digit is either 0 or 5. The last digit of 25110 is 0, so it is divisible by 5.

Step 2: Check divisibility by 9
A number is divisible by 9 if the sum of its digits is divisible by 9. Let's calculate the sum of the digits of 25110:

2 + 5 + 1 + 1 + 0 = 9
Since 9 is divisible by 9, the number 25110 is divisible by 9.

Step 3: Conclusion
Since 25110 is divisible by both 5 and 9, it is divisible by 45. Therefore, the answer is:

Yes, 25110 is divisible by 45.