125016664117 has 2 divisors, whose sum is σ = 125016664118. Its totient is φ = 125016664116.

The previous prime is 125016664111. The next prime is 125016664271. The reversal of 125016664117 is 711466610521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93461049796 + 31555614321 = 305714^2 + 177639^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125016664117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125016664117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125016664111) 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, 62508332058 + 62508332059.

It is an arithmetic number, because the mean of its divisors is an integer number (62508332059).

Almost surely, 2^125016664117 is an apocalyptic number.

It is an amenable number.

125016664117 is a deficient number, since it is larger than the sum of its proper divisors (1).

125016664117 is an equidigital number, since it uses as much as digits as its factorization.

125016664117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 125016664117 in words is "one hundred twenty-five billion, sixteen million, six hundred sixty-four thousand, one hundred seventeen".