Silica particle and method for producing the same

Silica particles containing a quaternary ammonium salt, wherein the silica particles satisfy the following expression

• CAFTER/CBEFORE≤1.5,
• as measured by:
• adhering the silica particles, before or after washing, to surfaces of resin particles to obtain silica-adhered resin particles,
• mixing the silica-adhered resin particles with a ferrite powder to form a mixture,
• separating the silica-adhered resin particles from the mixture, and
• measuring the electrostatic capacitance of the silica-adhered resin particles,
• wherein:
• CAFTER represents the measured electrostatic capacitance of the silica-adhered resin particles in which the silica particles after washing are adhered to the surfaces of the resin particles, and
• CBEFORE represents the measured electrostatic capacitance of the silica-adhered resin particles in which the silica particles before washing are adhered to the surfaces of the resin particles.