Base | Representation |
---|---|
bin | 100101011000101100… |
… | …0011010111101001001 |
3 | 21200020020002220100100 |
4 | 1022301120122331021 |
5 | 2303411024133200 |
6 | 100514350200013 |
7 | 5541355321335 |
oct | 1126130327511 |
9 | 250206086310 |
10 | 80285380425 |
11 | 3105a005678 |
12 | 136874b3009 |
13 | 77562b4483 |
14 | 3c58a247c5 |
15 | 214d590d00 |
hex | 12b161af49 |
80285380425 has 18 divisors (see below), whose sum is σ = 143800037342. Its totient is φ = 42818869440.
The previous prime is 80285380423. The next prime is 80285380471. The reversal of 80285380425 is 52408358208.
80285380425 is a `hidden beast` number, since 80 + 28 + 53 + 80 + 425 = 666.
It can be written as a sum of positive squares in 3 ways, for example, as 681836544 + 79603543881 = 26112^2 + 282141^2 .
It is not a de Polignac number, because 80285380425 - 21 = 80285380423 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (80285380421) by changing a digit.
It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 178411732 + ... + 178412181.
Almost surely, 280285380425 is an apocalyptic number.
It is an amenable number.
80285380425 is a deficient number, since it is larger than the sum of its proper divisors (63514656917).
80285380425 is a wasteful number, since it uses less digits than its factorization.
80285380425 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 356823929 (or 356823921 counting only the distinct ones).
The product of its (nonzero) digits is 614400, while the sum is 45.
The spelling of 80285380425 in words is "eighty billion, two hundred eighty-five million, three hundred eighty thousand, four hundred twenty-five".
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