125685646971 has 8 divisors (see below), whose sum is σ = 167875383120. Its totient is φ = 83643171072.

The previous prime is 125685646963. The next prime is 125685646973. The reversal of 125685646971 is 179646586521.

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

It is not a de Polignac number, because 125685646971 - 2³ = 125685646963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125685646973) 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, 36813070 + ... + 36816483.

It is an arithmetic number, because the mean of its divisors is an integer number (20984422890).

Almost surely, 2^125685646971 is an apocalyptic number.

125685646971 is a deficient number, since it is larger than the sum of its proper divisors (42189736149).

125685646971 is an equidigital number, since it uses as much as digits as its factorization.

125685646971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73630125.

The product of its digits is 21772800, while the sum is 60.

The spelling of 125685646971 in words is "one hundred twenty-five billion, six hundred eighty-five million, six hundred forty-six thousand, nine hundred seventy-one".