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80830687525 = 52717139919421
BaseRepresentation
bin100101101000111100…
…0100110100100100101
321201122020012101001121
41023101320212210211
52311020124000100
6101044430053541
75561026336060
oct1132170464445
9251566171047
1080830687525
11313098a79a5
12137ba04a2b1
1378122708b3
143cab2118d7
1521813a851a
hex12d1e26925

80830687525 has 48 divisors (see below), whose sum is σ = 121379731200. Its totient is φ = 52126387200.

The previous prime is 80830687517. The next prime is 80830687541. The reversal of 80830687525 is 52578603808.

It is not a de Polignac number, because 80830687525 - 23 = 80830687517 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 4152315 + ... + 4171735.

It is an arithmetic number, because the mean of its divisors is an integer number (2528744400).

Almost surely, 280830687525 is an apocalyptic number.

80830687525 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

80830687525 is a deficient number, since it is larger than the sum of its proper divisors (40549043675).

80830687525 is a wasteful number, since it uses less digits than its factorization.

80830687525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20854 (or 20849 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 80830687525 in words is "eighty billion, eight hundred thirty million, six hundred eighty-seven thousand, five hundred twenty-five".

Divisors: 1 5 7 17 25 35 85 119 175 425 595 1399 2975 6995 9793 19421 23783 34975 48965 97105 118915 135947 166481 244825 330157 485525 594575 679735 832405 1650785 2311099 3398675 4162025 8253925 11555495 27169979 57777475 135849895 190189853 461889643 679249475 950949265 2309448215 3233227501 4754746325 11547241075 16166137505 80830687525