12666254 has 4 divisors (see below), whose sum is σ = 18999384. Its totient is φ = 6333126.

The previous prime is 12666239. The next prime is 12666263. The reversal of 12666254 is 45266621.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12666254.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3166562 + ... + 3166565.

It is an arithmetic number, because the mean of its divisors is an integer number (4749846).

Almost surely, 2^12666254 is an apocalyptic number.

12666254 is a deficient number, since it is larger than the sum of its proper divisors (6333130).

12666254 is an equidigital number, since it uses as much as digits as its factorization.

12666254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6333129.

The product of its digits is 17280, while the sum is 32.

The square root of 12666254 is about 3558.9681088765. The cubic root of 12666254 is about 233.1038237586.

The spelling of 12666254 in words is "twelve million, six hundred sixty-six thousand, two hundred fifty-four".