12250861 has 4 divisors (see below), whose sum is σ = 14000992. Its totient is φ = 10500732.

The previous prime is 12250853. The next prime is 12250873. The reversal of 12250861 is 16805221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12250861 - 2³ = 12250853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12250831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875055 + ... + 875068.

It is an arithmetic number, because the mean of its divisors is an integer number (3500248).

Almost surely, 2^12250861 is an apocalyptic number.

It is an amenable number.

12250861 is a deficient number, since it is larger than the sum of its proper divisors (1750131).

12250861 is an equidigital number, since it uses as much as digits as its factorization.

12250861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750130.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 12250861 is about 3500.1229978388. The cubic root of 12250861 is about 230.5272152732.

The spelling of 12250861 in words is "twelve million, two hundred fifty thousand, eight hundred sixty-one".