12005258 has 4 divisors (see below), whose sum is σ = 18007890. Its totient is φ = 6002628.

The previous prime is 12005243. The next prime is 12005269. The reversal of 12005258 is 85250021.

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

It can be written as a sum of positive squares in only one way, i.e., 10582009 + 1423249 = 3253^2 + 1193^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3001313 + ... + 3001316.

Almost surely, 2^12005258 is an apocalyptic number.

12005258 is a deficient number, since it is larger than the sum of its proper divisors (6002632).

12005258 is an equidigital number, since it uses as much as digits as its factorization.

12005258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6002631.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 12005258 is about 3464.8604589507. The cubic root of 12005258 is about 228.9762820029.

Adding to 12005258 its reverse (85250021), we get a palindrome (97255279).

The spelling of 12005258 in words is "twelve million, five thousand, two hundred fifty-eight".