125568129 has 8 divisors (see below), whose sum is σ = 168491200. Its totient is φ = 83178576.

The previous prime is 125568061. The next prime is 125568133. The reversal of 125568129 is 921865521.

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

It is not a de Polignac number, because 125568129 - 2¹¹ = 125566081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125568139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132829 + ... + 133770.

It is an arithmetic number, because the mean of its divisors is an integer number (21061400).

Almost surely, 2^125568129 is an apocalyptic number.

It is an amenable number.

125568129 is a deficient number, since it is larger than the sum of its proper divisors (42923071).

125568129 is a wasteful number, since it uses less digits than its factorization.

125568129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266759.

The product of its digits is 43200, while the sum is 39.

The square root of 125568129 is about 11205.7185847227. The cubic root of 125568129 is about 500.7563605937.

The spelling of 125568129 in words is "one hundred twenty-five million, five hundred sixty-eight thousand, one hundred twenty-nine".