12557175401 has 2 divisors, whose sum is σ = 12557175402. Its totient is φ = 12557175400.

The previous prime is 12557175391. The next prime is 12557175457. The reversal of 12557175401 is 10457175521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12210471001 + 346704400 = 110501^2 + 18620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12557175401 is a prime.

It is not a weakly prime, because it can be changed into another prime (12557171401) 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 as a sum of consecutive naturals, namely, 6278587700 + 6278587701.

It is an arithmetic number, because the mean of its divisors is an integer number (6278587701).

Almost surely, 2^12557175401 is an apocalyptic number.

It is an amenable number.

12557175401 is a deficient number, since it is larger than the sum of its proper divisors (1).

12557175401 is an equidigital number, since it uses as much as digits as its factorization.

12557175401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49000, while the sum is 38.

The spelling of 12557175401 in words is "twelve billion, five hundred fifty-seven million, one hundred seventy-five thousand, four hundred one".