The former Serie A coach rates Totti as an Italian legend and was delighted to see his hat-trick against Bari on Sunday.
Zeman said: "Totti is the only champion of Italian football. I am not surprised that at 33 he is still playing at these levels.
"Totti was good even before I arrived, even if he was not playing regularly because he was too young. But to say he is a champion I did not need to see him score three goals yesterday against Bari."