Happy Birthday Leo. I hope you have a 25 candle birthday cake to show the greatest total light and most luminous glow possible.
Ah hell, who am I kidding, its not the number of candles that count. It's how brightly the ones you have burn and whether the person lighting the candles can put them in the best position on the cake. I heard there was once a three candle cake that was almost as bright as a 25 candle cake. Sure, it wasn't really as bright and never would be, but the cake candle organizer showed it was possible to get more from less candles.
So, hope your cake is bright.