12555055522 has 8 divisors (see below), whose sum is σ = 18834141996. Its totient is φ = 6277008192.

The previous prime is 12555055511. The next prime is 12555055531. The reversal of 12555055522 is 22555055521.

It can be written as a sum of positive squares in 2 ways, for example, as 12503488761 + 51566761 = 111819^2 + 7181^2 .

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

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, 228843 + ... + 278350.

Almost surely, 2^12555055522 is an apocalyptic number.

12555055522 is a deficient number, since it is larger than the sum of its proper divisors (6279086474).

12555055522 is a wasteful number, since it uses less digits than its factorization.

12555055522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519572.

The product of its (nonzero) digits is 125000, while the sum is 37.

Subtracting 12555055522 from its reverse (22555055521), we obtain a palindrome (9999999999).

The spelling of 12555055522 in words is "twelve billion, five hundred fifty-five million, fifty-five thousand, five hundred twenty-two".