| Base | Representation |
|---|---|
| bin | 1011111101101101… |
| … | …01001001100100001 |
| 3 | 121120122102102210000 |
| 4 | 11332312221030201 |
| 5 | 101123321033100 |
| 6 | 2541211530213 |
| 7 | 315113322624 |
| oct | 57666511441 |
| 9 | 17518372700 |
| 10 | 6423221025 |
| 11 | 27a6817031 |
| 12 | 12b3159969 |
| 13 | 7b497a900 |
| 14 | 44d0d9dbb |
| 15 | 278d86900 |
| hex | 17eda9321 |
6423221025 has 135 divisors (see below), whose sum is σ = 12978388731. Its totient is φ = 3139119360.
The previous prime is 6423221003. The next prime is 6423221069. The reversal of 6423221025 is 5201223246.
It is a happy number.
The square root of 6423221025 is 80145.
It is a perfect power (a square), and thus also a powerful number.
6423221025 is a `hidden beast` number, since 6 + 423 + 2 + 210 + 25 = 666.
6423221025 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 13 ways, for example, as 5705838369 + 717382656 = 75537^2 + 26784^2 .
It is a tau number, because it is divible by the number of its divisors (135).
It is not a de Polignac number, because 6423221025 - 27 = 6423220897 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a self number, because there is not a number n which added to its sum of digits gives 6423221025.
It is an unprimeable number.
It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 46884757 + ... + 46884893.
Almost surely, 26423221025 is an apocalyptic number.
6423221025 is a gapful number since it is divisible by the number (65) formed by its first and last digit.
6423221025 is the 80145-th square number.
6423221025 is the 40073-rd centered octagonal number.
It is an amenable number.
6423221025 is an abundant number, since it is smaller than the sum of its proper divisors (6555167706).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
6423221025 is a wasteful number, since it uses less digits than its factorization.
6423221025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 322 (or 158 counting only the distinct ones).
The product of its (nonzero) digits is 5760, while the sum is 27.
The cubic root of 6423221025 is about 1858.8782908892.
The spelling of 6423221025 in words is "six billion, four hundred twenty-three million, two hundred twenty-one thousand, twenty-five".
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