12555222 has 8 divisors (see below), whose sum is σ = 25110456. Its totient is φ = 4185072.

The previous prime is 12555199. The next prime is 12555241. The reversal of 12555222 is 22255521.

It is a sphenic number, since it is the product of 3 distinct primes.

12555222 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 12555192 and 12555201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1046263 + ... + 1046274.

It is an arithmetic number, because the mean of its divisors is an integer number (3138807).

Almost surely, 2^12555222 is an apocalyptic number.

12555222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12555222 is a wasteful number, since it uses less digits than its factorization.

12555222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092542.

The product of its digits is 2000, while the sum is 24.

The square root of 12555222 is about 3543.3348698648. The cubic root of 12555222 is about 232.4206967367.

The spelling of 12555222 in words is "twelve million, five hundred fifty-five thousand, two hundred twenty-two".