12505879 has 2 divisors, whose sum is σ = 12505880. Its totient is φ = 12505878.

The previous prime is 12505853. The next prime is 12505891. The reversal of 12505879 is 97850521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12505879 - 2¹¹ = 12503831 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12505079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6252939 + 6252940.

It is an arithmetic number, because the mean of its divisors is an integer number (6252940).

Almost surely, 2^12505879 is an apocalyptic number.

12505879 is a deficient number, since it is larger than the sum of its proper divisors (1).

12505879 is an equidigital number, since it uses as much as digits as its factorization.

12505879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 12505879 is about 3536.3652243511. The cubic root of 12505879 is about 232.1158198458.

The spelling of 12505879 in words is "twelve million, five hundred five thousand, eight hundred seventy-nine".