וְאֵ֨לֶּה שָׂרֵ֤י הנציבים [הַנִּצָּבִ֛ים] אֲשֶׁר־לַמֶּ֥לֶךְ שְׁלֹמֹ֖ה חֲמִשִּׁ֣ים וּמָאתָ֑יִם הָרֹדִ֖ים בָּעָֽם׃
And these were the chief officers of king Solomon, even two hundred and fifty, that bore rule over the people.
Read midrashic interpretation of II Chronicles 8:10: and classical rabbinic exegesis.