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12515027500 = 22545006011
BaseRepresentation
bin10111010011111010…
…00010101000101100
31012022012020021021001
423221331002220230
5201112321340000
65425504250044
7622063656433
oct135175025054
935265207231
1012515027500
115342452438
122513310924
131245a7b921
1486a1a611a
154d3aa646a
hex2e9f42a2c

12515027500 has 30 divisors (see below), whose sum is σ = 27367867604. Its totient is φ = 5006010000.

The previous prime is 12515027461. The next prime is 12515027617. The reversal of 12515027500 is 572051521.

12515027500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 9 ways as a sum of consecutive naturals, for example, 2500506 + ... + 2505505.

Almost surely, 212515027500 is an apocalyptic number.

12515027500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12515027500 is an abundant number, since it is smaller than the sum of its proper divisors (14852840104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12515027500 is an equidigital number, since it uses as much as digits as its factorization.

12515027500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5006035 (or 5006018 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 28.

The spelling of 12515027500 in words is "twelve billion, five hundred fifteen million, twenty-seven thousand, five hundred".

Divisors: 1 2 4 5 10 20 25 50 100 125 250 500 625 1250 2500 5006011 10012022 20024044 25030055 50060110 100120220 125150275 250300550 500601100 625751375 1251502750 2503005500 3128756875 6257513750 12515027500