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12505013241 = 374496412069
BaseRepresentation
bin10111010010101101…
…10101101111111001
31012021111101111021120
423221112311233321
5201102240410431
65424505455453
7621612600360
oct135126655771
935244344246
1012505013241
115337832596
12250baa1589
131243983726
14868b1a7d7
154d2c79196
hex2e95b5bf9

12505013241 has 32 divisors (see below), whose sum is σ = 19136736000. Its totient is φ = 7115243520.

The previous prime is 12505013239. The next prime is 12505013363. The reversal of 12505013241 is 14231050521.

It is a happy number.

It is not a de Polignac number, because 12505013241 - 21 = 12505013239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12505013201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6042955 + ... + 6045023.

It is an arithmetic number, because the mean of its divisors is an integer number (598023000).

Almost surely, 212505013241 is an apocalyptic number.

It is an amenable number.

12505013241 is a deficient number, since it is larger than the sum of its proper divisors (6631722759).

12505013241 is a wasteful number, since it uses less digits than its factorization.

12505013241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3169.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 12505013241 its reverse (14231050521), we get a palindrome (26736063762).

The spelling of 12505013241 in words is "twelve billion, five hundred five million, thirteen thousand, two hundred forty-one".

Divisors: 1 3 7 21 449 641 1347 1923 2069 3143 4487 6207 9429 13461 14483 43449 287809 863427 928981 1326229 2014663 2786943 3978687 6043989 6502867 9283603 19508601 27850809 595476821 1786430463 4168337747 12505013241