7.6x10^-25

7.6 x 10^-25 is a very small number. It can be expressed as 0.000000000000000000000000076.

6.7x20^-52

6.7 x 20^-52 is also a very small number. It can be expressed as 0.000000000000000000000000000000000000000000000000000067.

5.2x10^7

5.2 x 10^7 is a relatively large number. It can be expressed as 52,000,000