Octomom Leaving Her Home

A rep for Nadya Suleman tells TMZ, she hasn't paid her mortgage in three months because she doesn't want to live there anymore -- and the place is scheduled for foreclosure next week.

According to the rep, Octo's going to try to sell the home before the bank takes it -- but if she fails, c'est la vie ... Nadya just wants to get the hell out of there. Credit score be damned.

The rep says Octo had the place appraised recently for $500,000 -- pretty good in this economy ... but the bad news is she still owes $450,000.

Nadya's list of grievances is endless -- but the rep tells us, Octo simply can't justify the $3,500-a-month mortgage payments ... especially when the place is in utter disrepair (video above).