That's crazy. Their net income is almost the same as Google's with 1/3rd the number of employees. I am surprised that they have 25k employees now, wow!
Alphabet: $9.4 Billion [0]
Facebook: $5.0 Billion [1]
[1] https://s21.q4cdn.com/399680738/files/doc_financials/2018/Q1...
Google's VC investments booked a ton of gains all-at-once in the quarter (due to an accounting change) which won't be recurring. About $2.4bn added to net income.