THE TWENTY FIFTH GENERATION:
Joseph saw Ephraim's children of the third generation: the children of Machir the son of Manasseh were brought upon Joseph's knees.  (Genesis 50:23)

The sons of Gershon; Libni, Shimi (Exodus 6:17)
The sons of Kohath; Amram, Izhar, Hebron, Uzziel (Exodus 6:18)
     Kohath lived for 133 years.  (Exodus 6:18)
The sons of Merari: Mahali, Mushi (Exodus 6:19)