8450991825 has 24 divisors (see below), whose sum is σ = 13980914688. Its totient is φ = 4504418880.

The previous prime is 8450991797. The next prime is 8450991847. The reversal of 8450991825 is 5281990548.

It is not a de Polignac number, because 8450991825 - 2¹⁵ = 8450959057 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90847 + ... + 158603.

It is an arithmetic number, because the mean of its divisors is an integer number (582538112).

Almost surely, 2^8450991825 is an apocalyptic number.

It is an amenable number.

8450991825 is a deficient number, since it is larger than the sum of its proper divisors (5529922863).

8450991825 is a wasteful number, since it uses less digits than its factorization.

8450991825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69433 (or 69428 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 51.

The square root of 8450991825 is about 91929.2762127495. The cubic root of 8450991825 is about 2036.8977441392.

The spelling of 8450991825 in words is "eight billion, four hundred fifty million, nine hundred ninety-one thousand, eight hundred twenty-five".