125055553511191 has 2 divisors, whose sum is σ = 125055553511192. Its totient is φ = 125055553511190.

The previous prime is 125055553511179. The next prime is 125055553511209. The reversal of 125055553511191 is 191115355550521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125055553511191 - 2²³ = 125055545122583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125055553511591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62527776755595 + 62527776755596.

It is an arithmetic number, because the mean of its divisors is an integer number (62527776755596).

Almost surely, 2^{125055553511191} is an apocalyptic number.

125055553511191 is a deficient number, since it is larger than the sum of its proper divisors (1).

125055553511191 is an equidigital number, since it uses as much as digits as its factorization.

125055553511191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 843750, while the sum is 49.

The spelling of 125055553511191 in words is "one hundred twenty-five trillion, fifty-five billion, five hundred fifty-three million, five hundred eleven thousand, one hundred ninety-one".