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12648515125 = 53307329603
BaseRepresentation
bin10111100011110100…
…10000011000110101
31012122111102010212011
423301322100120311
5201401004441000
65451033324221
7625304414251
oct136172203065
935574363764
1012648515125
115400836694
12254bb66671
13126761899c
1487dbd3261
154e06732ba
hex2f1e90635

12648515125 has 16 divisors (see below), whose sum is σ = 15836812992. Its totient is φ = 10085821200.

The previous prime is 12648515101. The next prime is 12648515147. The reversal of 12648515125 is 52151584621.

12648515125 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 12648515125 - 25 = 12648515093 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, 126427 + ... + 203176.

It is an arithmetic number, because the mean of its divisors is an integer number (989800812).

Almost surely, 212648515125 is an apocalyptic number.

It is an amenable number.

12648515125 is a deficient number, since it is larger than the sum of its proper divisors (3188297867).

12648515125 is an equidigital number, since it uses as much as digits as its factorization.

12648515125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329925 (or 329915 counting only the distinct ones).

The product of its digits is 96000, while the sum is 40.

The spelling of 12648515125 in words is "twelve billion, six hundred forty-eight million, five hundred fifteen thousand, one hundred twenty-five".

Divisors: 1 5 25 125 307 1535 7675 38375 329603 1648015 8240075 41200375 101188121 505940605 2529703025 12648515125