125672729 has 16 divisors (see below), whose sum is σ = 159667200. Its totient is φ = 96223680.

The previous prime is 125672719. The next prime is 125672737. The reversal of 125672729 is 927276521.

It is not a de Polignac number, because 125672729 - 2²⁴ = 108895513 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (125672719) 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 15 ways as a sum of consecutive naturals, for example, 19454 + ... + 25095.

It is an arithmetic number, because the mean of its divisors is an integer number (9979200).

Almost surely, 2^125672729 is an apocalyptic number.

It is an amenable number.

125672729 is a deficient number, since it is larger than the sum of its proper divisors (33994471).

125672729 is a wasteful number, since it uses less digits than its factorization.

125672729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44600.

The product of its digits is 105840, while the sum is 41.

The square root of 125672729 is about 11210.3848729649. The cubic root of 125672729 is about 500.8953676764.

The spelling of 125672729 in words is "one hundred twenty-five million, six hundred seventy-two thousand, seven hundred twenty-nine".