What number on the oven to heat upto 425 degrees?

Most ovens have at least 2 dials. One dial has the Word "bake" on it. Turn that dial to "bake". Another dial has numbers on it, usually up to 500. This is the degree dial. Turn it to the number 425 to heat up to 425 degrees. Depending on what you are cooking, it may take a while for the food, a turkey - for instance- to actually heat up to 425 degrees internally. You can check this by using a special thermometer that you stick into the food.