125521333817 has 8 divisors (see below), whose sum is σ = 136935051552. Its totient is φ = 114108064000.

The previous prime is 125521333771. The next prime is 125521333823. The reversal of 125521333817 is 718333125521.

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 125521333817 - 2³⁰ = 124447591993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125521333837) 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, 789638 + ... + 935184.

It is an arithmetic number, because the mean of its divisors is an integer number (17116881444).

Almost surely, 2^125521333817 is an apocalyptic number.

It is an amenable number.

125521333817 is a deficient number, since it is larger than the sum of its proper divisors (11413717735).

125521333817 is a wasteful number, since it uses less digits than its factorization.

125521333817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223959.

The product of its digits is 151200, while the sum is 41.

The spelling of 125521333817 in words is "one hundred twenty-five billion, five hundred twenty-one million, three hundred thirty-three thousand, eight hundred seventeen".