Small diretrosnub snub prismatosnub pentishecatonicositetrishexacosichoron

The small diretrosnub snub prismatosnub pentishecatonicositetrishexacosichoron, or sadersosposphitux, is a nonconvex uniform polychoron that consists of 600 great icosahedra, 600 icosahedra, 4800 octahemioctahedra (some of which lie in the same hyperplanes, forming 2400 compounds of two), 600 rhombicosahedra, 600 small ditrigonal dodecicosidodecahedra, 3600 pentagrammic prisms, and 3000 truncated tetrahedra (600 of which form 120 truncated chiricosahedra).

One great icosahedron, one icosahedron, eight octahemioctahedra (eight compounds), five rhombicosahedra, five small ditrigonal dodecicosidodecahedra, five pentagrammic prisms, and five truncated tetrahedra (one compound and four single) join at each vertex.

It can be obtained as the blend of 5 small dipentary hecatonicosidishexacosichora and 5 small capped dipentary prismatodishecatonicosihexacosihecatonicosachora.

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