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206090125 = 5310316007
BaseRepresentation
bin11000100100010…
…10111110001101
3112100210110111121
430102022332031
5410224341000
632241120541
75051510563
oct1422127615
9470713447
10206090125
11a637261a
1259029151
133390a327
141d529a33
151315db1a
hexc48af8d

206090125 has 16 divisors (see below), whose sum is σ = 259713792. Its totient is φ = 163261200.

The previous prime is 206090123. The next prime is 206090141. The reversal of 206090125 is 521090602.

206090125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 206090125 - 21 = 206090123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206090125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206090123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4872 + ... + 20878.

It is an arithmetic number, because the mean of its divisors is an integer number (16232112).

Almost surely, 2206090125 is an apocalyptic number.

206090125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

206090125 is a deficient number, since it is larger than the sum of its proper divisors (53623667).

206090125 is a wasteful number, since it uses less digits than its factorization.

206090125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16125 (or 16115 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 206090125 is about 14355.8394042285. The cubic root of 206090125 is about 590.6801741053.

The spelling of 206090125 in words is "two hundred six million, ninety thousand, one hundred twenty-five".

Divisors: 1 5 25 103 125 515 2575 12875 16007 80035 400175 1648721 2000875 8243605 41218025 206090125