Isochrone tracks from Girardi et al. (2000) for WASP-25 using the best-fitting metallicity of −0.07 and stellar density 1.29 ρ⊙. Isochrones are 0.019 95 Gyr (solid), 0.7943 Gyr (dashed), 1.99 Gyr (dot–dashed), 3.16 Gyr (dotted) and 5.01 Gyr (triple dot–dashed).