To simplify \( 12543 \), we need to determine if it can be expressed as a rational or whole number.
However, considering the number itself, it looks like a single number rather than a fraction or expression that needs simplification.
It seems like you might be asking to simplify \( \sqrt{12543} \), but if that's the case, it's not a perfect square, so we would need to approximate it or factor it.
To simplify:
- You can estimate \( \sqrt{12543} \) and try to find the square root manually or by a calculator.
The closest perfect square to \( 12543 \) is \( 625 \) (since \( 25^2 = 625 \)), but it's far from either.
If \( 12543 \) should represent a square root problem, then you should check the choices:
- 625 is actually \( 25^2 \),
- 125 is an option.
- 5 and 25 fall well below what we would expect from \( 12543 \).
So, without further context or guidance, it’s difficult to determine what exactly you are simplifying.
Can you please clarify what you're referring to?