Upon the sale of real property, where the estate sold is less than a leasehold of two years' unexpired term, the sale is absolute; in all other cases the property sold, or any portion thereof which has been sold separately, is subject to redemption:

1. (1) By the judgment debtor, the debtor's heirs or assigns;

2. (2) By a creditor having a lien, legal or equitable, on the property or some part thereof, subsequent to that on which it was sold.

   Creditors shall redeem in the order of their respective liens.