Why should I have to look up what fits your bike? It's right there near you isn't it? Go look at how much clearance your 23 mm tires have to all parts of your bike. Find the narrowest clearance and that is how much bigger you can go.

What you have to decide on is how much clearance you want for safety. Mud sticking to the tire might slow you to a quick stop. Or a stick getting kicked up in that narrow clearance part might ruin your day.

23 to 25 mm is 2 mm more height on your tire and 2 mm more width. But you have to allow for differences between manufacturers. External tire dimensions aren't set in stone by any governing authority.