8821315825 has 48 divisors (see below), whose sum is σ = 12987771904. Its totient is φ = 5815929600.

The previous prime is 8821315799. The next prime is 8821315847. The reversal of 8821315825 is 5285131288.

It is not a de Polignac number, because 8821315825 - 2⁷ = 8821315697 is a prime.

It is a super-2 number, since 2×8821315825² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 846547 + ... + 856903.

Almost surely, 2^8821315825 is an apocalyptic number.

It is an amenable number.

8821315825 is a deficient number, since it is larger than the sum of its proper divisors (4166456079).

8821315825 is a wasteful number, since it uses less digits than its factorization.

8821315825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10562 (or 10557 counting only the distinct ones).

The product of its digits is 153600, while the sum is 43.

The square root of 8821315825 is about 93921.8602083668. The cubic root of 8821315825 is about 2066.2258490812.

The spelling of 8821315825 in words is "eight billion, eight hundred twenty-one million, three hundred fifteen thousand, eight hundred twenty-five".