8617125521 has 8 divisors (see below), whose sum is σ = 8897637888. Its totient is φ = 8336772000.

The previous prime is 8617125509. The next prime is 8617125527. The reversal of 8617125521 is 1255217168.

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 8617125521 - 2⁶ = 8617125457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8617125527) 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, 75941 + ... + 151661.

It is an arithmetic number, because the mean of its divisors is an integer number (1112204736).

Almost surely, 2^8617125521 is an apocalyptic number.

It is an amenable number.

8617125521 is a deficient number, since it is larger than the sum of its proper divisors (280512367).

8617125521 is a wasteful number, since it uses less digits than its factorization.

8617125521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79423.

The product of its digits is 33600, while the sum is 38.

The square root of 8617125521 is about 92828.4736543696. The cubic root of 8617125521 is about 2050.1586647767.

The spelling of 8617125521 in words is "eight billion, six hundred seventeen million, one hundred twenty-five thousand, five hundred twenty-one".