Base | Representation |
---|---|
bin | 11000011101100… |
… | …11000001111001 |
3 | 112022010112012100 |
4 | 30032303001321 |
5 | 410013040000 |
6 | 32210134013 |
7 | 5041135062 |
oct | 1416630171 |
9 | 468115170 |
10 | 205205625 |
11 | a5919029 |
12 | 58881309 |
13 | 3368a861 |
14 | 1d379569 |
15 | 13036a00 |
hex | c3b3079 |
205205625 has 45 divisors (see below), whose sum is σ = 372340969. Its totient is φ = 108870000.
The previous prime is 205205593. The next prime is 205205629. The reversal of 205205625 is 526502502.
The square root of 205205625 is 14325.
It is a perfect power (a square), and thus also a powerful number.
205205625 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 2 ways, for example, as 16088121 + 189117504 = 4011^2 + 13752^2 .
It is a tau number, because it is divible by the number of its divisors (45).
It is not a de Polignac number, because 205205625 - 25 = 205205593 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (205205629) by changing a digit.
It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1074280 + ... + 1074470.
Almost surely, 2205205625 is an apocalyptic number.
205205625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.
205205625 is the 14325-th square number.
205205625 is the 7163-rd centered octagonal number.
It is an amenable number.
205205625 is a deficient number, since it is larger than the sum of its proper divisors (167135344).
205205625 is an frugal number, since it uses more digits than its factorization.
205205625 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 408 (or 199 counting only the distinct ones).
The product of its (nonzero) digits is 6000, while the sum is 27.
The cubic root of 205205625 is about 589.8339329609.
The spelling of 205205625 in words is "two hundred five million, two hundred five thousand, six hundred twenty-five".
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