640789367225

Names of 640789367225

• Cardinal: 640789367225 can be written as Six hundred forty billion, seven hundred eighty-nine million, three hundred sixty-seven thousand, two hundred twenty-five.

Scientific notation

• Scientific notation: 6.40789367225 × 10¹¹

Factors of 640789367225

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 180

Divisors of 640789367225

• Number of divisors d(n): 96
• Complete list of divisors:
  1 5 7 25 35 49 61 107 175 245 305 343 427 535 749 1225 1525 1715 2135 2675 2989 3745 5243 6527 8575 10675 11449 14945 18725 20923 26215 32635 36701 45689 57245 74725 80143 104615 131075 163175 183505 228445 286225 319823 400715 523075 561001 698389 917525 1142225 1225043 1599115 2003575 2238761 2805005 3491945 3927007 4888723 6125215 7995575 8575301 11193805 14025025 17459725 19635035 24443615 30626075 34221061 42876505 55969025 60027107 74727623 98175175 122218075 171105305 214382525 239547427 300135535 373638115 420189749 523093361 855526525 1197737135 1500677675 1868190575 2100948745 2615466805 3661653527 5988685675 10504743725 13077334025 18308267635 25631574689 91541338175 128157873445 640789367225
• Sum of all divisors σ(n): 950698080000
• Sum of proper divisors (its aliquot sum) s(n): 309908712775
• 640789367225 is a deficient number, because the sum of its proper divisors (309908712775) is less than itself. Its deficiency is 330880654450

Bases of 640789367225

• Binary: 1001010100110010000001011100100110111001₂
• Hexadecimal: 0x953205C9B9
• Base-36: 86DHG055

Squares and roots of 640789367225

• 640789367225 squared (640789367225²) is 410611013148615904200625
• 640789367225 cubed (640789367225³) is 263115171291117740137289713199515625
• The square root of 640789367225 is 800493.2024851929
• The cube root of 640789367225 is 8621.2803047719

Scales and comparisons

• 640,789,367,225 seconds is equal to 20,375 years, 6 weeks, 1 day, 14 hours, 27 minutes, 5 seconds.
• To count from 1 to 640,789,367,225 would take you about forty thousand, seven hundred fifty 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 640789367225 cubic inches would be around 718.4 feet tall.

Recreational maths with 640789367225

• 640789367225 backwards is 522763987046
• The number of decimal digits it has is: 12
• The sum of 640789367225's digits is 59
• More coming soon!