To find the perimeter of a square, you can use the formula:
\[ \text{Perimeter} = 4 \times \text{side length} \]
In this case, the side length of the square is 25 meters. Therefore, the perimeter would be:
\[ \text{Perimeter} = 4 \times 25,m = 100,m \]
So, the perimeter of the square is 100 meters.