125688929 has 8 divisors (see below), whose sum is σ = 130287360. Its totient is φ = 121108176.

The previous prime is 125688919. The next prime is 125688931. The reversal of 125688929 is 929886521.

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

It is a de Polignac number, because none of the positive numbers 2^k-125688929 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 (125688919) 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 7 ways as a sum of consecutive naturals, for example, 11024 + ... + 19310.

It is an arithmetic number, because the mean of its divisors is an integer number (16285920).

Almost surely, 2^125688929 is an apocalyptic number.

It is an amenable number.

125688929 is a deficient number, since it is larger than the sum of its proper divisors (4598431).

125688929 is an equidigital number, since it uses as much as digits as its factorization.

125688929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8839.

The product of its digits is 622080, while the sum is 50.

The square root of 125688929 is about 11211.1073940089. The cubic root of 125688929 is about 500.9168895992.

The spelling of 125688929 in words is "one hundred twenty-five million, six hundred eighty-eight thousand, nine hundred twenty-nine".