Small disnub prismatosnub tetrishexacosidishexacosichoron

The small disnub prismatosnub tetrishexacosidishexacosichoron, or sadsapostuxdex, is a nonconvex uniform polychoron that consists of 1200 great icosahedra (some of which lie in the same hyperplanes, forming 600 small retrosnub disoctahedra), 600 great dodecahedra, 4800 cuboctahedra (forming 2400 compounds of two), 600 rhombidodecadodecahedra, 600 small ditrigonal dodecicosidodecahedra, and 3600 pentagrammic prisms.

Two great icosahedra (two compounds), one great dodecahedron, eight cuboctahedra (six compounds), five rhombidodecadodecahedra, five small ditrigonal dodecicosidodecahedra, and five pentagrammic prisms join at each vertex.

It can be obtained as the blend of 5 small dipentary dishecatonicosihexacosidishecatonicosachora and 5 small dipentary hexacosiprismatodishecatonicosachora.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the small diretrosnub disnub decahecatonicosadishexacosichoron.