252,525 is a year to which the professor, Bender and Fry went.
- The third medieval age in Earth history. Knights ride ostriches instead of horses.
During this year, it is an era where mankind has lost all forms of technology except for a rusty sword, used for proctology. With the previous era being an ice age, and the era before that with all civilization being lost, it is possible that humans had to start all over again ever since the advanced technology was lost.