Genesis 25:4-7

25:4 The sons of Midian were Ephah, Epher, Hanoch, Abida, and Eldaah. All these were descendants of Keturah.

25:5 Everything he owned Abraham left to his son Isaac. 25:6 But while he was still alive, Abraham gave gifts to the sons of his concubines and sent them off to the east, away from his son Isaac.

25:7 Abraham lived a total of 175 years.