12505711 has 2 divisors, whose sum is σ = 12505712. Its totient is φ = 12505710.

The previous prime is 12505709. The next prime is 12505723. The reversal of 12505711 is 11750521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12505711 - 2¹ = 12505709 is a prime.

Together with 12505709, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12505111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6252855 + 6252856.

It is an arithmetic number, because the mean of its divisors is an integer number (6252856).

Almost surely, 2^12505711 is an apocalyptic number.

12505711 is the 1582-nd centered decagonal number.

12505711 is a deficient number, since it is larger than the sum of its proper divisors (1).

12505711 is an equidigital number, since it uses as much as digits as its factorization.

12505711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 12505711 is about 3536.3414710687. The cubic root of 12505711 is about 232.1147804511.

The spelling of 12505711 in words is "twelve million, five hundred five thousand, seven hundred eleven".