answer: 5.072 teaspoons. (or just 5)
explanation: 1 milliliter is equal to 0.203 teaspoons. this means for every 1 milliliter, it should be multiplied by 0.203.
so for 25 milliliters, multiply 25 with 0.203 to get 5.072. this answer might be rounded to just 5 teaspoons.