I was told that he graduated with a doctorate at the age of 25. Is this possible?

You don't say! People read early and have talent. Anything is possible. Suppose he goes to primary school at the age of 5, and if he has talent, he jumps to the next level. He went to junior high school at the age of 65,438+00, went to college at the age of 65,438+06, graduated from undergraduate course at the age of 20, and it is normal to graduate from doctoral degree at the age of 25. It's normal to have a master's degree or a doctorate here. It's just that your own subjective understanding is limited. The world is big, and there is no wonder.