8252807521 has 8 divisors (see below), whose sum is σ = 9491856320. Its totient is φ = 7028777808.

The previous prime is 8252807509. The next prime is 8252807531. The reversal of 8252807521 is 1257082528.

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 8252807521 - 2⁵ = 8252807489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8252807531) 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, 3753591 + ... + 3755788.

It is an arithmetic number, because the mean of its divisors is an integer number (1186482040).

Almost surely, 2^8252807521 is an apocalyptic number.

It is an amenable number.

8252807521 is a deficient number, since it is larger than the sum of its proper divisors (1239048799).

8252807521 is a wasteful number, since it uses less digits than its factorization.

8252807521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7509543.

The product of its (nonzero) digits is 89600, while the sum is 40.

The square root of 8252807521 is about 90844.9642027559. The cubic root of 8252807521 is about 2020.8491937343.

The spelling of 8252807521 in words is "eight billion, two hundred fifty-two million, eight hundred seven thousand, five hundred twenty-one".