8501805825 has 24 divisors (see below), whose sum is σ = 14883163488. Its totient is φ = 4267572480.

The previous prime is 8501805787. The next prime is 8501805833. The reversal of 8501805825 is 5285081058.

It is not a de Polignac number, because 8501805825 - 2⁶ = 8501805761 is a prime.

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, 3332767 + ... + 3335316.

It is an arithmetic number, because the mean of its divisors is an integer number (620131812).

Almost surely, 2^8501805825 is an apocalyptic number.

8501805825 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8501805825 is a deficient number, since it is larger than the sum of its proper divisors (6381357663).

8501805825 is a wasteful number, since it uses less digits than its factorization.

8501805825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6668113 (or 6668108 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 42.

The square root of 8501805825 is about 92205.2375139287. The cubic root of 8501805825 is about 2040.9720653295.

The spelling of 8501805825 in words is "eight billion, five hundred one million, eight hundred five thousand, eight hundred twenty-five".