If 25 minutes were the time left between entering the terminal from where you are being bussed to, to getting to your departure gate, this would be enough. In reality, though, this is simply not doable even if landing on time. I'm afraid you'll have the unique opportunity to "choosing" the non-stop Ryanair flight. Be glad, it's no longer what it used to be like, as they've changed a lot in terms of procedures a year ago or so. Still, after that you'll be able to talk to your grandchildren about them by experience.