The text in question is an end-note to the Book of Psalms in the Biblia Hebraica Stuttgartensia. Thanks to a friend whose Hebrew is fluent (mine is not), I learned that the meaning is quite straightforward. It simply summarizes the number of verses and sections:
sum of the verses of [the] book
two thousands and five hundred
and twenty and seven
and sections 19
My question is "what are these 19 sections?" My friend says it refers to a reading schedule but I can't find a schedule that divides it this way.