125740652065 has 32 divisors (see below), whose sum is σ = 185581407744.
Its totient is φ = 79819914240.
The previous prime is 125740652053. The next prime is 125740652069. The reversal of 125740652065 is 560256047521.
Adding to 125740652065 its reverse (560256047521), we get a palindrome (685996699586).
It is a de Polignac number, because none of the positive numbers 2k-125740652065 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (125740652069) 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 in 31 ways as a sum of consecutive naturals, for example, 1695909 + ... + 1768498.
It is an arithmetic number, because the mean of its divisors is an integer number (5799418992).
Almost surely, 2125740652065 is an apocalyptic number.
It is an amenable number.
125740652065 is a deficient number, since it is larger than the sum of its proper divisors (59840755679).
125740652065 is a wasteful number, since it uses less digits than its factorization.
125740652065 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3464497.
The product of its (nonzero) digits is 504000, while the sum is 43.
The spelling of 125740652065 in words is "one hundred twenty-five billion, seven hundred forty million, six hundred fifty-two thousand, sixty-five".