125512005089 has 2 divisors, whose sum is σ = 125512005090. Its totient is φ = 125512005088.

The previous prime is 125512005083. The next prime is 125512005167. The reversal of 125512005089 is 980500215521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64259715025 + 61252290064 = 253495^2 + 247492^2 .

It is an emirp because it is prime and its reverse (980500215521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125512005089 - 2⁸ = 125512004833 is a prime.

It is a super-2 number, since 2×125512005089² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125512005083) 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, 62756002544 + 62756002545.

It is an arithmetic number, because the mean of its divisors is an integer number (62756002545).

Almost surely, 2^125512005089 is an apocalyptic number.

It is an amenable number.

125512005089 is a deficient number, since it is larger than the sum of its proper divisors (1).

125512005089 is an equidigital number, since it uses as much as digits as its factorization.

125512005089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36000, while the sum is 38.

The spelling of 125512005089 in words is "one hundred twenty-five billion, five hundred twelve million, five thousand, eighty-nine".