The DC magnetization M, AC magnetic susceptibility χ^′ and χ^′′, and electrical resistivity ρ were measured for Sr₈V₈O₂₅ polycrystals. The magnetic susceptibility showed ferrimagnetic temperature dependence, and the transition temperature T _C was estimated as 105 K. Below T _C, the steep increase of magnetic susceptibility and the ferrimagnetic M–H curves were observed. The peaks of χ^′ and χ^′′, and the visible splitting of the field cooled magnetization (FCM) and zero field cooled magnetization (ZFCM) appeared at T _p=57 K. These behaviors show the rapid increase of magnetic relaxation time below T _p. The existence of a major M–H loop with a large coercive force was assumed at 5 K from the positively shifted FCM–H loop and small ZFCM, which also supported the above interpretation. The temperature dependence of ρ was semiconductive above T _p with a slight change of activation energy near T _C, while the hopping conductive behavior and the current dependence of ρ appeared below T _p. The existence of thermal hysteresis in ρ below T _p suggested that the magnetic and electrical anomalies at T _p were induced by the structural phase transition of Sr₈V₈O₂₅.