12265861 has 2 divisors, whose sum is σ = 12265862. Its totient is φ = 12265860.

The previous prime is 12265853. The next prime is 12265871. The reversal of 12265861 is 16856221.

12265861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6477025 + 5788836 = 2545^2 + 2406^2 .

It is a cyclic number.

It is not a de Polignac number, because 12265861 - 2³ = 12265853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12265871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6132930 + 6132931.

It is an arithmetic number, because the mean of its divisors is an integer number (6132931).

Almost surely, 2^12265861 is an apocalyptic number.

It is an amenable number.

12265861 is a deficient number, since it is larger than the sum of its proper divisors (1).

12265861 is an equidigital number, since it uses as much as digits as its factorization.

12265861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 31.

The square root of 12265861 is about 3502.2651241732. The cubic root of 12265861 is about 230.6212630275.

The spelling of 12265861 in words is "twelve million, two hundred sixty-five thousand, eight hundred sixty-one".