11825861 has 2 divisors, whose sum is σ = 11825862. Its totient is φ = 11825860.

The previous prime is 11825851. The next prime is 11825873. The reversal of 11825861 is 16852811.

11825861 is digitally balanced in base 2 and base 3, because in such bases 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., 10764961 + 1060900 = 3281^2 + 1030^2 .

It is an emirp because it is prime and its reverse (16852811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11825861 - 2⁶ = 11825797 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11825851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5912930 + 5912931.

It is an arithmetic number, because the mean of its divisors is an integer number (5912931).

Almost surely, 2^11825861 is an apocalyptic number.

It is an amenable number.

11825861 is a deficient number, since it is larger than the sum of its proper divisors (1).

11825861 is an equidigital number, since it uses as much as digits as its factorization.

11825861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 32.

The square root of 11825861 is about 3438.8749613791. The cubic root of 11825861 is about 227.8300069183.

The spelling of 11825861 in words is "eleven million, eight hundred twenty-five thousand, eight hundred sixty-one".