##Excel 2010 VBA 113 bytes
I am assuming paragraph spacing is 1 byte. This won't work with earlier versions of Excel. For those who dont have/use Excel, column 14925 is VBA
n = 14925
Do While n > 0
c = ((n - 1) Mod 26)
s = Chr(c + 65) & s
n = (n - c) \ 26
Loop
Debug.Print s