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12515085 = 32511131193
BaseRepresentation
bin101111101111…
…011100001101
3212112211110200
4233233130031
511200440320
61124124113
7211243062
oct57573415
925484420
1012515085
117078850
124236639
13279259b
14193ac69
151173290
hexbef70d

12515085 has 48 divisors (see below), whose sum is σ = 23969088. Its totient is φ = 5990400.

The previous prime is 12515081. The next prime is 12515093. The reversal of 12515085 is 58051521.

It is not a de Polignac number, because 12515085 - 22 = 12515081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12515081) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64749 + ... + 64941.

It is an arithmetic number, because the mean of its divisors is an integer number (499356).

Almost surely, 212515085 is an apocalyptic number.

12515085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12515085 is a deficient number, since it is larger than the sum of its proper divisors (11454003).

12515085 is a wasteful number, since it uses less digits than its factorization.

12515085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The square root of 12515085 is about 3537.6666038506. Note that the first 4 decimals coincide. The cubic root of 12515085 is about 232.1727619745.

It can be divided in two parts, 1251 and 5085, that added together give a palindrome (6336).

The spelling of 12515085 in words is "twelve million, five hundred fifteen thousand, eighty-five".

Divisors: 1 3 5 9 11 15 33 45 55 99 131 165 193 393 495 579 655 965 1179 1441 1737 1965 2123 2895 4323 5895 6369 7205 8685 10615 12969 19107 21615 25283 31845 64845 75849 95535 126415 227547 278113 379245 834339 1137735 1390565 2503017 4171695 12515085