This graph is the unique rank-4 $\mathrm{SRG}(325,144,68,60)$.
| Number of vertices: | $325$ |
| Diameter: | $2$ |
| Intersection array: | $\{144,75;1,60\}$ |
| Spectrum: | $144^1 14^{90} (-6)^{234}$ |
| Automorphism group: | $\mathrm{PGO}(5,5) \cong \mathrm{PSp}(4,5).2$ |
| Distance-transitive: | No |
| Primitive |