Q: What is the negative version of the number 642,668,225?
A: -642,668,225
Negative numbers are usually written with - in front of them. They represent a number that is less than zero.
Here are more examples of negative numbers in sequence:
| 642,668,223 | 642,668,224 | 642,668,226 | 642,668,227 |
| -642,668,223 | -642,668,224 | -642,668,226 | -642,668,227 |