Gematria (ju-MAH-tree-uh

A Hebrew (can also be done in Greek and any language that uses it's alphabet for numerals instead of such as our Arabic numerals) way of rendering names numerically.

Matthew 1:17 So all the generations from Abraham to David were fourteen generations (Hebrew Dalet/4 + Vav/6 + Dalet/4 = 14, and from David to the deportation to Babylon fourteen generations, and from the deportation to Babylon to the Christ fourteen generations. DAVID DAVID DAVID

Rev 13:18 This calls for wisdom: let him who has understanding reckon the number of the beast, for it is a human number, its number is six hundred and sixty-six. 

"Nero Caesar" in the Hebrew alphabet is נרון קסר NRON QSR, which when interpreted numerically represents the numbers 50 200 6 50 100 60 200, which add up to 666.

   R.                   S.               Q.             N.            O.            R.             N             

נ   ר   ו   ן    ק   ס    ר 

    200               60.              100.            50.           6.             200.         50

נ    N     50

ר    R    200

ו    O        6

ן    N      50

ק    Q   100

ס    S      60

ר    R    200

            666

NeRON Q/CaeSaR

50 + 200 + 6 + 50 + 100 + 60 + 200 = 666