I was wondering what is the average number of SHSY5Y cells you get in a confluent flask of T25 and T75. I normally have 2x106 cells in a T25 and 7.0x106 in a T75. I tried to compare my results I cannot find further information.
your cell numbers are close to the average for the sh-sy5y line.
please consider that more than a few times these cells grow overhanging the monolayer and even forming clumps of cells. this could change significantly your perception of real confluence.