8205642225

Names of 8205642225

• Cardinal: 8205642225 can be written as Eight billion, two hundred five million, six hundred forty-two thousand, two hundred twenty-five.

Scientific notation

• Scientific notation: 8.205642225 × 10⁹

Factors of 8205642225

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 80

Divisors of 8205642225

• Number of divisors d(n): 189
• Complete list of divisors:
  1 3 5 9 11 15 25 27 33 45 55 61 75 81 99 121 135 165 183 225 243 275 297 305 363 405 495 549 605 671 675 729 825 891 915 1089 1215 1485 1525 1647 1815 2013 2025 2475 2673 2745 3025 3267 3355 3645 3721 4455 4575 4941 5445 6039 6075 7381 7425 8019 8235 9075 9801 10065 11163 13365 13725 14823 16335 16775 18117 18225 18605 22143 22275 24705 27225 29403 30195 33489 36905 40095 40931 41175 44469 49005 50325 54351 55815 66429 66825 74115 81675 88209 90585 93025 100467 110715 122793 123525 147015 150975 163053 167445 184525 199287 200475 204655 222345 245025 271755 279075 301401 332145 368379 370575 441045 450241 452925 489159 502335 553575 597861 613965 735075 815265 837225 904203 996435 1023275 1105137 1111725 1350723 1358775 1507005 1660725 1793583 1841895 2205225 2251205 2445795 2511675 2712609 2989305 3069825 3315411 4052169 4076325 4521015 4982175 5380749 5525685 6753615 7535025 8967915 9209475 9946233 11256025 12156507 12228975 13563045 14946525 16577055 20260845 22605075 26903745 27628425 29838699 33768075 36469521 44839575 49731165 60782535 67815225 82885275 101304225 109408563 134518725 149193495 182347605 248655825 303912675 328225689 547042815 745967475 911738025 1641128445 2735214075 8205642225
• Sum of all divisors σ(n): 17047858737
• Sum of proper divisors (its aliquot sum) s(n): 8842216512
• 8205642225 is an abundant number, because the sum of its proper divisors (8842216512) is greater than itself. Its abundance is 636574287

Bases of 8205642225

• Binary: 111101001000110000010100111110001₂
• Hexadecimal: 0x1E91829F1
• Base-36: 3RPFE29

Squares and roots of 8205642225

• 8205642225 squared (8205642225²) is 67332564324702950625
• 8205642225 cubed (8205642225³) is 552506932940311142230590140625
• 8205642225 is a perfect square number. Its square root is 90585
• The cube root of 8205642225 is 2016.9920778835

Scales and comparisons

• 8,205,642,225 seconds is equal to 260 years, 47 weeks, 3 days, 17 hours, 3 minutes, 45 seconds.
• To count from 1 to 8,205,642,225 would take you about five hundred twenty-one years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 8205642225 cubic inches would be around 168.1 feet tall.

Recreational maths with 8205642225

• 8205642225 backwards is 5222465028
• The number of decimal digits it has is: 10
• The sum of 8205642225's digits is 36
• More coming soon!