Sony has sold over 600 Million PlayStations lifetime to date.
Vgchartz numbers-
PS1- 102.49 Million
PS2- 158.7 Million
PSP- 80.79 Million
PS3- 87.4 Million
PS Vita- 15.82 Million
PS4- 117.09 Million
PS5- 40.83 Million * (As of July 2023)
Total- 603.12 Million
Even if we assume PS5 to sell just as much as the PS4 did, that would put the total at 679.4 million.
The average would be 97 Million units per Console.
Absolutely incredible considering just how much the Vita drags down that aggregate value (average).