12555198251201 has 4 divisors (see below), whose sum is σ = 12560379928512. Its totient is φ = 12550016573892.

The previous prime is 12555198251093. The next prime is 12555198251209. The reversal of 12555198251201 is 10215289155521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12555198251201 - 2²² = 12555194056897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12555198251209) 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 3 ways as a sum of consecutive naturals, for example, 2590835021 + ... + 2590839866.

It is an arithmetic number, because the mean of its divisors is an integer number (3140094982128).

Almost surely, 2^{12555198251201} is an apocalyptic number.

It is an amenable number.

12555198251201 is a deficient number, since it is larger than the sum of its proper divisors (5181677311).

12555198251201 is an equidigital number, since it uses as much as digits as its factorization.

12555198251201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5181677310.

The product of its (nonzero) digits is 360000, while the sum is 47.

The spelling of 12555198251201 in words is "twelve trillion, five hundred fifty-five billion, one hundred ninety-eight million, two hundred fifty-one thousand, two hundred one".