8215983525 has 24 divisors (see below), whose sum is σ = 14174360640. Its totient is φ = 4191341440.

The previous prime is 8215983509. The next prime is 8215983569. The reversal of 8215983525 is 5253895128.

It is a happy number.

It is not a de Polignac number, because 8215983525 - 2⁴ = 8215983509 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2379720 + ... + 2383169.

It is an arithmetic number, because the mean of its divisors is an integer number (590598360).

Almost surely, 2^8215983525 is an apocalyptic number.

It is an amenable number.

8215983525 is a deficient number, since it is larger than the sum of its proper divisors (5958377115).

8215983525 is a wasteful number, since it uses less digits than its factorization.

8215983525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4762925 (or 4762920 counting only the distinct ones).

The product of its digits is 864000, while the sum is 48.

The square root of 8215983525 is about 90642.0626696017. The cubic root of 8215983525 is about 2017.8390383602.

The spelling of 8215983525 in words is "eight billion, two hundred fifteen million, nine hundred eighty-three thousand, five hundred twenty-five".