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12725819 is a prime number
BaseRepresentation
bin110000100010…
…111000111011
3212221112112122
4300202320323
511224211234
61132431455
7213111341
oct60427073
925845478
1012725819
117202107
12431858b
132837492
141993991
1511b592e
hexc22e3b

12725819 has 2 divisors, whose sum is σ = 12725820. Its totient is φ = 12725818.

The previous prime is 12725813. The next prime is 12725821. The reversal of 12725819 is 91852721.

12725819 is nontrivially palindromic in base 14.

12725819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12725819 - 28 = 12725563 is a prime.

It is a super-2 number, since 2×127258192 = 323892938441522, which contains 22 as substring.

Together with 12725821, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12725813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6362909 + 6362910.

It is an arithmetic number, because the mean of its divisors is an integer number (6362910).

Almost surely, 212725819 is an apocalyptic number.

12725819 is a deficient number, since it is larger than the sum of its proper divisors (1).

12725819 is an equidigital number, since it uses as much as digits as its factorization.

12725819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 35.

The square root of 12725819 is about 3567.3265900391. The cubic root of 12725819 is about 233.4686546121.

The spelling of 12725819 in words is "twelve million, seven hundred twenty-five thousand, eight hundred nineteen".