Base | Representation |
---|---|
bin | 110001100111… |
… | …010011001001 |
3 | 220110202220122 |
4 | 301213103021 |
5 | 11312143100 |
6 | 1142433025 |
7 | 215356304 |
oct | 61472311 |
9 | 26422818 |
10 | 13006025 |
11 | 738368a |
12 | 4432775 |
13 | 2904b96 |
14 | 1a27b3b |
15 | 121d985 |
hex | c674c9 |
13006025 has 6 divisors (see below), whose sum is σ = 16127502. Its totient is φ = 10404800.
The previous prime is 13006009. The next prime is 13006027. The reversal of 13006025 is 52060031.
13006025 is digitally balanced in base 2, 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 3 ways, for example, as 4338889 + 8667136 = 2083^2 + 2944^2 .
It is not a de Polignac number, because 13006025 - 24 = 13006009 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 13005994 and 13006012.
It is not an unprimeable number, because it can be changed into a prime (13006027) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 260096 + ... + 260145.
It is an arithmetic number, because the mean of its divisors is an integer number (2687917).
Almost surely, 213006025 is an apocalyptic number.
It is an amenable number.
13006025 is a deficient number, since it is larger than the sum of its proper divisors (3121477).
13006025 is an equidigital number, since it uses as much as digits as its factorization.
13006025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 520251 (or 520246 counting only the distinct ones).
The product of its (nonzero) digits is 180, while the sum is 17.
The square root of 13006025 is about 3606.3866958495. The cubic root of 13006025 is about 235.1697882682.
Adding to 13006025 its reverse (52060031), we get a palindrome (65066056).
The spelling of 13006025 in words is "thirteen million, six thousand, twenty-five".
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