Small diretrosnub snub prismatosnub tetrishexacosipentishecatonicosachoron

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

One icosahedron, eight octahemioctahedra (eight compounds), five truncated icosahedra, five small rhombicosidodecahedra, 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 dipentary prismatodishecatonicosihecatonicosihexacosichora.

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