Finite Group DatabasebetaFinite Group DatabasebetaOrder 500.
20 conjugacy classes of subgroups.
| # | subgroup | G/H | class size | multiplicity | normal? | properties |
|---|---|---|---|---|---|---|
| 1 | D5×C25 | C2 | 1 | 1 | yes | maximal, characteristic |
| 2 | C5×C25 | C4 | 1 | 1 | yes | characteristic, complemented, Sylow |
| 3 | #1042 | — | 5 | 1 | no | maximal |
| 4 | Dic25 | — | 5 | 1 | no | maximal |
| 5 | C5×D5 | D5 | 1 | 1 | yes | characteristic |
| 6 | C2×C25 | — | 5 | 1 | no | — |
| 7 | C52 | Dic5 | 1 | 1 | yes | characteristic |
| 8 | C25 | — | 4 | 1 | no | — |
| 9 | C25 | AGL(1,𝔽5) | 1 | 1 | yes | characteristic, complemented |
| 10 | AGL(1,𝔽5) | — | 25 | 1 | no | — |
| 11 | Dic5 | — | 25 | 1 | no | — |
| 12 | C2×C5 | — | 5 | 1 | no | — |
| 13 | D5 | D25 | 1 | 1 | yes | characteristic |
| 14 | C5 | — | 4 | 1 | no | — |
| 15 | C5 | Dic25 | 1 | 1 | yes | characteristic, complemented |
| 16 | C5 | #1042 | 1 | 1 | yes | characteristic |
| 17 | C4 | — | 125 | 1 | no | Sylow |
| 18 | C2 | — | 5 | 1 | no | — |
| subgroup | G/H | |
|---|---|---|
| center, hypercenter | C1 | G |
| commutator, Fitting, hypocenter | C5×C25 | C4 |
| Frattini | C5 | #1042 |
| socle | C52 | Dic5 |
| prime radical | C5×D5 | D5 |
| cosocle | D5×C25 | C2 |
| LCS | G ▷ C5×C25 | |
| UCS | C1 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 2. C5×C25 | C4 | semidirect |
| 9. C25 | AGL(1,𝔽5) | semidirect |
| 15. C5 | Dic25 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| D5×C25 | 2 |
| #1042 | 5 |
| Dic25 | 5 |