Base | Representation |
---|---|
bin | 110001110100… |
… | …101110100001 |
3 | 220120120100200 |
4 | 301310232201 |
5 | 11320423100 |
6 | 1143535413 |
7 | 216005535 |
oct | 61645641 |
9 | 26516320 |
10 | 13061025 |
11 | 7410a3a |
12 | 445a569 |
13 | 2923c23 |
14 | 1a3dbc5 |
15 | 122ee00 |
hex | c74ba1 |
13061025 has 18 divisors (see below), whose sum is σ = 23394150. Its totient is φ = 6965760.
The previous prime is 13061023. The next prime is 13061029. The reversal of 13061025 is 52016031.
13061025 is a `hidden beast` number, since 1 + 30 + 610 + 25 = 666.
13061025 is digitally balanced in base 2 and base 4, because in such bases 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 1710864 + 11350161 = 1308^2 + 3369^2 .
It is not a de Polignac number, because 13061025 - 21 = 13061023 is a prime.
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 13060989 and 13061007.
It is not an unprimeable number, because it can be changed into a prime (13061021) 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, 28800 + ... + 29249.
It is an arithmetic number, because the mean of its divisors is an integer number (1299675).
Almost surely, 213061025 is an apocalyptic number.
13061025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
13061025 is a deficient number, since it is larger than the sum of its proper divisors (10333125).
13061025 is a wasteful number, since it uses less digits than its factorization.
13061025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 58065 (or 58057 counting only the distinct ones).
The product of its (nonzero) digits is 180, while the sum is 18.
The square root of 13061025 is about 3614.0040121726. The cubic root of 13061025 is about 235.5008181507.
Adding to 13061025 its reverse (52016031), we get a palindrome (65077056).
The spelling of 13061025 in words is "thirteen million, sixty-one thousand, twenty-five".
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