1025388945

Names of 1025388945

• Cardinal: 1025388945 can be written as One billion, twenty-five million, three hundred eighty-eight thousand, nine hundred forty-five.

Scientific notation

• Scientific notation: 1.025388945 × 10⁹

Factors of 1025388945

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 3285

Divisors of 1025388945

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 5 7 9 15 21 35 45 49 63 105 147 149 245 315 441 447 735 745 1043 1341 2205 2235 3121 3129 5215 6705 7301 9363 9387 15605 15645 21847 21903 28089 36505 46815 46935 65541 65709 109235 109515 140445 152929 196623 327705 328545 458787 465029 764645 983115 1376361 1395087 2293935 2325145 3255203 4185261 6881805 6975435 9765609 16276015 20926305 22786421 29296827 48828045 68359263 113932105 146484135 205077789 341796315 1025388945
• Sum of all divisors σ(n): 2082061800
• Sum of proper divisors (its aliquot sum) s(n): 1056672855
• 1025388945 is an abundant number, because the sum of its proper divisors (1056672855) is greater than itself. Its abundance is 31283910

Bases of 1025388945

• Binary: 111101000111100011000110010001₂
• Hexadecimal: 0x3D1E3191
• Base-36: GYHN69

Squares and roots of 1025388945

• 1025388945 squared (1025388945²) is 1051422488528213025
• 1025388945 cubed (1025388945³) is 1078116996261218956440008625
• The square root of 1025388945 is 32021.6949114191
• The cube root of 1025388945 is 1008.3923530481

Scales and comparisons

• 1,025,388,945 seconds is equal to 32 years, 31 weeks, 2 days, 22 hours, 15 minutes, 45 seconds.
• To count from 1 to 1,025,388,945 would take you about sixty-five 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 1025388945 cubic inches would be around 84 feet tall.

Recreational maths with 1025388945

• 1025388945 backwards is 5498835201
• 1025388945 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1025388945's digits is 45
• More coming soon!