125823840217 has 8 divisors (see below), whose sum is σ = 128756297120. Its totient is φ = 122891670720.

The previous prime is 125823840211. The next prime is 125823840221. The reversal of 125823840217 is 712048328521.

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 125823840217 - 2³ = 125823840209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125823840211) 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, 997009 + ... + 1116097.

It is an arithmetic number, because the mean of its divisors is an integer number (16094537140).

Almost surely, 2^125823840217 is an apocalyptic number.

It is an amenable number.

125823840217 is a deficient number, since it is larger than the sum of its proper divisors (2932456903).

125823840217 is a wasteful number, since it uses less digits than its factorization.

125823840217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143703.

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 125823840217 in words is "one hundred twenty-five billion, eight hundred twenty-three million, eight hundred forty thousand, two hundred seventeen".