125559837557 has 16 divisors (see below), whose sum is σ = 164781196800. Its totient is φ = 92689421040.

The previous prime is 125559837539. The next prime is 125559837563. The reversal of 125559837557 is 755738955521.

It is a cyclic number.

It is not a de Polignac number, because 125559837557 - 2⁶ = 125559837493 is a prime.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 125559837557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125559837517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42910307 + ... + 42913232.

It is an arithmetic number, because the mean of its divisors is an integer number (10298824800).

Almost surely, 2^125559837557 is an apocalyptic number.

It is an amenable number.

125559837557 is a deficient number, since it is larger than the sum of its proper divisors (39221359243).

125559837557 is a wasteful number, since it uses less digits than its factorization.

125559837557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85823576.

The product of its digits is 66150000, while the sum is 62.

The spelling of 125559837557 in words is "one hundred twenty-five billion, five hundred fifty-nine million, eight hundred thirty-seven thousand, five hundred fifty-seven".