127405212225 has 12 divisors (see below), whose sum is σ = 210643284336. Its totient is φ = 67949446480.

The previous prime is 127405212223. The next prime is 127405212229. The reversal of 127405212225 is 522212504721.

It is not a de Polignac number, because 127405212225 - 2¹ = 127405212223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (127405212223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 849368007 + ... + 849368156.

It is an arithmetic number, because the mean of its divisors is an integer number (17553607028).

Almost surely, 2^127405212225 is an apocalyptic number.

127405212225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127405212225 is a deficient number, since it is larger than the sum of its proper divisors (83238072111).

127405212225 is a wasteful number, since it uses less digits than its factorization.

127405212225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698736176 (or 1698736171 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

Adding to 127405212225 its reverse (522212504721), we get a palindrome (649617716946).

The spelling of 127405212225 in words is "one hundred twenty-seven billion, four hundred five million, two hundred twelve thousand, two hundred twenty-five".