1-Cyclohexylmethyl-3-methyl-2-[(phenylimino)(sulfido)methyl]benzimidazolium

In the zwitterionic title compound, C22H25N3S, the benzimidazole ring system makes a dihedral angle of 55.69 (11)° with the phenyl ring. In the crystal structure, inter- and intramolecular C—H⋯S interactions occur.