Small diretrosnub snub pentishecatonicosidishexacositrishexacosichoron

The small diretrosnub snub pentishecatonicosidishexacositrishexacosichoron, or sadros sphidixtix, is a nonconvex uniform polychoron that consists of 600 small stellated dodecahedra, 1200 icosahedra (some of which lie in the same hyperplanes, forming 600 snub disoctahedra), 4800 octahemioctahedra (forming 2400 compounds of two), 600 icosidodecadodecahedra, 600 small dodecicosidodecahedra, and 3000 truncated tetrahedra (600 of which form 120 truncated chiricosahedra).

One small stellated dodecahedron, two icosahedra (two compounds), eight octahemioctahedra (eight compounds), five icosidodecadodecahedra, five small dodecicosidodecahedra, 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 tetrishecatonicosihexacosichora.

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