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285351530125 = 5317134283073
BaseRepresentation
bin1000010011100000100…
…01101100111010001101
31000021112122020122201211
410021300101230322031
514133344442431000
6335031053334421
726421163662154
oct4116021547215
91007478218654
10285351530125
11100020555052
1247377797411
1320ba708335c
14db4d8a659b
1576516867ba
hex427046ce8d

285351530125 has 16 divisors (see below), whose sum is σ = 377066871792. Its totient is φ = 214852915200.

The previous prime is 285351530117. The next prime is 285351530131. The reversal of 285351530125 is 521035153582.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 7961814441 + 277389715684 = 89229^2 + 526678^2 .

It is not a de Polignac number, because 285351530125 - 23 = 285351530117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67139412 + ... + 67143661.

It is an arithmetic number, because the mean of its divisors is an integer number (23566679487).

Almost surely, 2285351530125 is an apocalyptic number.

285351530125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

285351530125 is a deficient number, since it is larger than the sum of its proper divisors (91715341667).

285351530125 is a wasteful number, since it uses less digits than its factorization.

285351530125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134283105 (or 134283095 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 40.

The spelling of 285351530125 in words is "two hundred eighty-five billion, three hundred fifty-one million, five hundred thirty thousand, one hundred twenty-five".

Divisors: 1 5 17 25 85 125 425 2125 134283073 671415365 2282812241 3357076825 11414061205 16785384125 57070306025 285351530125