12125220255 has 48 divisors (see below), whose sum is σ = 21318076416. Its totient is φ = 6374738880.

The previous prime is 12125220229. The next prime is 12125220259. The reversal of 12125220255 is 55202252121.

It is a happy number.

It is not a de Polignac number, because 12125220255 - 2²² = 12121025951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12125220259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1027740 + ... + 1039470.

It is an arithmetic number, because the mean of its divisors is an integer number (444126592).

Almost surely, 2^12125220255 is an apocalyptic number.

12125220255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12125220255 is a deficient number, since it is larger than the sum of its proper divisors (9192856161).

12125220255 is a wasteful number, since it uses less digits than its factorization.

12125220255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12068 (or 12065 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 12125220255 its reverse (55202252121), we get a palindrome (67327472376).

The spelling of 12125220255 in words is "twelve billion, one hundred twenty-five million, two hundred twenty thousand, two hundred fifty-five".