125688934889 has 8 divisors (see below), whose sum is σ = 143690576640. Its totient is φ = 107698813056.

The previous prime is 125688934849. The next prime is 125688934907. The reversal of 125688934889 is 988439886521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125688934889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125688934849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2856584 + ... + 2900249.

It is an arithmetic number, because the mean of its divisors is an integer number (17961322080).

Almost surely, 2^125688934889 is an apocalyptic number.

It is an amenable number.

125688934889 is a deficient number, since it is larger than the sum of its proper divisors (18001641751).

125688934889 is an equidigital number, since it uses as much as digits as its factorization.

125688934889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5759959.

The product of its digits is 238878720, while the sum is 71.

The spelling of 125688934889 in words is "one hundred twenty-five billion, six hundred eighty-eight million, nine hundred thirty-four thousand, eight hundred eighty-nine".