125116125121 has 8 divisors (see below), whose sum is σ = 140598722880. Its totient is φ = 110470424592.

The previous prime is 125116125119. The next prime is 125116125137. The reversal of 125116125121 is 121521611521.

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

It is a cyclic number.

It is not a de Polignac number, because 125116125121 - 2¹ = 125116125119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125116125121.

It is not an unprimeable number, because it can be changed into a prime (125116125181) 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, 209223991 + ... + 209224588.

It is an arithmetic number, because the mean of its divisors is an integer number (17574840360).

Almost surely, 2^125116125121 is an apocalyptic number.

It is an amenable number.

125116125121 is a deficient number, since it is larger than the sum of its proper divisors (15482597759).

125116125121 is a wasteful number, since it uses less digits than its factorization.

125116125121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418448615.

The product of its digits is 1200, while the sum is 28.

Adding to 125116125121 its reverse (121521611521), we get a palindrome (246637736642).

The spelling of 125116125121 in words is "one hundred twenty-five billion, one hundred sixteen million, one hundred twenty-five thousand, one hundred twenty-one".