פְּקֻדֵיהֶ֖ם לְמַטֵּ֣ה גָ֑ד חֲמִשָּׁ֤ה וְאַרְבָּעִים֙ אֶ֔לֶף וְשֵׁ֥שׁ מֵא֖וֹת וַחֲמִשִּֽׁים׃ (פ)
those that were numbered of them, of the tribe of Gad, were forty and five thousand six hundred and fifty.
Read kabbalistic (mystical) interpretation of Numbers 1:25: and classical mystical sources.