12205004250 has 32 divisors (see below), whose sum is σ = 30463692480. Its totient is φ = 3254667600.

The previous prime is 12205004239. The next prime is 12205004267. The reversal of 12205004250 is 5240050221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8135920 + ... + 8137419.

It is an arithmetic number, because the mean of its divisors is an integer number (951990390).

Almost surely, 2^12205004250 is an apocalyptic number.

12205004250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12205004250 is an abundant number, since it is smaller than the sum of its proper divisors (18258688230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12205004250 is a wasteful number, since it uses less digits than its factorization.

12205004250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16273359 (or 16273349 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

Adding to 12205004250 its reverse (5240050221), we get a palindrome (17445054471).

The spelling of 12205004250 in words is "twelve billion, two hundred five million, four thousand, two hundred fifty".