1225212561

Names of 1225212561

• Cardinal: 1225212561 can be written as One billion, two hundred twenty-five million, two hundred twelve thousand, five hundred sixty-one.

Scientific notation

• Scientific notation: 1.225212561 × 10⁹

Factors of 1225212561

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 196

Divisors of 1225212561

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 9 27 29 37 81 87 111 127 243 261 333 381 783 999 1073 1143 1369 2349 2997 3219 3429 3683 4107 4699 7047 8991 9657 10287 11049 12321 14097 28971 30861 33147 36963 39701 42291 86913 99441 110889 119103 126873 136271 173863 260739 298323 332667 357309 380619 408813 521589 894969 1071927 1141857 1226439 1564767 3215781 3679317 4694301 5042027 9647343 11037951 14082903 15126081 33113853 42248709 45378243 136134729 408404187 1225212561
• Sum of all divisors σ(n): 1966648320
• Sum of proper divisors (its aliquot sum) s(n): 741435759
• 1225212561 is a deficient number, because the sum of its proper divisors (741435759) is less than itself. Its deficiency is 483776802

Bases of 1225212561

• Binary: 1001001000001110100001010010001₂
• Hexadecimal: 0x49074291
• Base-36: K9GK29

Squares and roots of 1225212561

• 1225212561 squared (1225212561²) is 1501145819632178721
• 1225212561 cubed (1225212561³) is 1839222714105985768766114481
• The square root of 1225212561 is 35003.0364539993
• The cube root of 1225212561 is 1070.0493647705

Scales and comparisons

• 1,225,212,561 seconds is equal to 38 years, 49 weeks, 5 days, 16 hours, 49 minutes, 21 seconds.
• To count from 1 to 1,225,212,561 would take you about seventy-seven 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 1225212561 cubic inches would be around 89.2 feet tall.

Recreational maths with 1225212561

• 1225212561 backwards is 1652125221
• 1225212561 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1225212561's digits is 27
• More coming soon!