6.25 x 10^18 is equal to 6250000000000000000.
An electron has a charge of about 1.6 x 10-19 Coulombs (the fundamental or elementary charge)So we can use a proportion and cross multiply it to find this out.Let x = # of electrons( 1 electron / 1.6 x 10-19 C) = ( x / 1 C )= 1/1.6 x 10-19 electrons = 1019/1.6electrons1019/1.6electrons = 6.25 x 1018 electrons(6250000000000000000 electrons)If you wanted to say that number:six quintillion, two hundred fifty quadrillion electrons