25 cups of water is how many gallons?

25 cups of water is equal to approximately 1.5625 gallons. To calculate this, we need to know that there are 16 cups in a gallon. So, we can divide the number of cups by 16 to find the number of gallons. In this case, 25 / 16 = 1.5625, which is approximately 1.56 gallons.