How to connect low power components to high power component?
The wire (or conductor) needs to have enough cross sectional area to carry the current that the conductor is carrying. The resistance of the wire and the current will create heat, if the conductor is sized too small the wire can overheat and cause damage. The gate can have a small wire, it carries little or no current.
So the source and drain pins will need to carry 25A a piece, but you'll need to check the datasheet for the mosfet because too much current (like 25A) can burn up a mosfet if it's not rated for it, or if the mosfet is not fully off or fully on. A good thing to do would be to parallel more mosfets, as 6 mosfets would 16A a piece.
Another problem is unbalanced mosfets, they need to switch on and be matched somewhat or one fet can take more current and power dissipation which could cause it to burn up.
A relay would be the most robust solution and easiest to implement