postgis - Query to find the Intersection coordinates of multiple Polyon

I am using the query below to find out the intersection coordinates of 2 Polygons and it's working fine, but how can I use or modify the query to find the intersection area coordinates for multiple (or N number of) polygons?

SELECT ST_AsText(
        ST_INTERSECTION(
                       ST_GeomFromText('POLYGON((1.25 9.5,1.375 18.25,7.25 17.875,7.375 9.5,1.25 9.5))'),
                       ST_GeomFromText('POLYGON((1.25 9.5,1.375 18.25,7.25 17.875,7.375 9.5,1.25 9.5))')
                )
        );

What other alternative do I have?