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85025517 = 31710715581
BaseRepresentation
bin1010001000101…
…10001011101101
312220222202002020
411010112023231
5133231304032
612234220353
72051463543
oct504261355
9186882066
1085025517
1143aa3a25
12245846b9
13147cc975
14b413d93
1576e7b2c
hex51162ed

85025517 has 16 divisors (see below), whose sum is σ = 121165632. Its totient is φ = 52847360.

The previous prime is 85025489. The next prime is 85025531. The reversal of 85025517 is 71552058.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 85025517 - 26 = 85025453 is a prime.

It is a super-2 number, since 2×850255172 = 14458677082234578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85025587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2334 + ... + 13247.

It is an arithmetic number, because the mean of its divisors is an integer number (7572852).

Almost surely, 285025517 is an apocalyptic number.

It is an amenable number.

85025517 is a deficient number, since it is larger than the sum of its proper divisors (36140115).

85025517 is a wasteful number, since it uses less digits than its factorization.

85025517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15708.

The product of its (nonzero) digits is 14000, while the sum is 33.

The square root of 85025517 is about 9220.9282070733. The cubic root of 85025517 is about 439.7269604228.

The spelling of 85025517 in words is "eighty-five million, twenty-five thousand, five hundred seventeen".

Divisors: 1 3 17 51 107 321 1819 5457 15581 46743 264877 794631 1667167 5001501 28341839 85025517