Base | Representation |
---|---|
bin | 1001101000100… |
… | …01010100111101 |
3 | 12122001122022001 |
4 | 10310101110331 |
5 | 131141430300 |
6 | 12004022301 |
7 | 2000612350 |
oct | 464212475 |
9 | 178048261 |
10 | 80811325 |
11 | 41685821 |
12 | 23091991 |
13 | 1398576a |
14 | aa38297 |
15 | 716416a |
hex | 4d1153d |
80811325 has 24 divisors (see below), whose sum is σ = 115264448. Its totient is φ = 55054080.
The previous prime is 80811323. The next prime is 80811343. The reversal of 80811325 is 52311808.
It is not a de Polignac number, because 80811325 - 21 = 80811323 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 80811293 and 80811302.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (80811323) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27109 + ... + 29941.
Almost surely, 280811325 is an apocalyptic number.
It is an amenable number.
80811325 is a deficient number, since it is larger than the sum of its proper divisors (34453123).
80811325 is a wasteful number, since it uses less digits than its factorization.
80811325 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3013 (or 3008 counting only the distinct ones).
The product of its (nonzero) digits is 1920, while the sum is 28.
The square root of 80811325 is about 8989.5119444829. The cubic root of 80811325 is about 432.3386636926.
The spelling of 80811325 in words is "eighty million, eight hundred eleven thousand, three hundred twenty-five".
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