125611052117 has 2 divisors, whose sum is σ = 125611052118. Its totient is φ = 125611052116.

The previous prime is 125611052111. The next prime is 125611052129. The reversal of 125611052117 is 711250116521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106058343556 + 19552708561 = 325666^2 + 139831^2 .

It is a cyclic number.

It is not a de Polignac number, because 125611052117 - 2¹⁴ = 125611035733 is a prime.

It is a super-4 number, since 4×125611052117⁴ (a number of 45 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125611052111) 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 as a sum of consecutive naturals, namely, 62805526058 + 62805526059.

It is an arithmetic number, because the mean of its divisors is an integer number (62805526059).

Almost surely, 2^125611052117 is an apocalyptic number.

It is an amenable number.

125611052117 is a deficient number, since it is larger than the sum of its proper divisors (1).

125611052117 is an equidigital number, since it uses as much as digits as its factorization.

125611052117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 32.

Adding to 125611052117 its reverse (711250116521), we get a palindrome (836861168638).

The spelling of 125611052117 in words is "one hundred twenty-five billion, six hundred eleven million, fifty-two thousand, one hundred seventeen".