| Base | Representation |
|---|---|
| bin | 111101000111101… |
| … | …111100010101000 |
| 3 | 2122110112202010000 |
| 4 | 331013233202220 |
| 5 | 4100003034122 |
| 6 | 245430423000 |
| 7 | 34261044510 |
| oct | 7507574250 |
| 9 | 2573482100 |
| 10 | 1025439912 |
| 11 | 48691a202 |
| 12 | 247501a60 |
| 13 | 1345a66a3 |
| 14 | 9a290840 |
| 15 | 600590ac |
| hex | 3d1ef8a8 |
1025439912 has 160 divisors (see below), whose sum is σ = 3425558400. Its totient is φ = 280215936.
The previous prime is 1025439911. The next prime is 1025439959. The reversal of 1025439912 is 2199345201.
1025439912 is a `hidden beast` number, since 1 + 0 + 254 + 399 + 12 = 666.
It is a super-3 number, since 3×10254399123 (a number of 28 digits) contains 333 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1025439911) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 99414 + ... + 109242.
It is an arithmetic number, because the mean of its divisors is an integer number (21409740).
Almost surely, 21025439912 is an apocalyptic number.
1025439912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1025439912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1712779200).
1025439912 is an abundant number, since it is smaller than the sum of its proper divisors (2400118488).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1025439912 is a wasteful number, since it uses less digits than its factorization.
1025439912 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9877 (or 9864 counting only the distinct ones).
The product of its (nonzero) digits is 19440, while the sum is 36.
The square root of 1025439912 is about 32022.4907213664. The cubic root of 1025439912 is about 1008.4090601658.
The spelling of 1025439912 in words is "one billion, twenty-five million, four hundred thirty-nine thousand, nine hundred twelve".
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