I need help with calc spreadhseets, i'm guessing a macro?

I have a list of 800 names on my main calc spreadsheet, which needs to also be broken up over multiple sheets in groups of 25. i have already igned a column and cell to sort by, so they are all now in numerical order. what i want to do now is make it take rows 1 to 25, create a new sheet, name it, then paste in those 25 rows. this needs to be done for the whole spreadsheet. any suggestions?