8550825989 has 4 divisors (see below), whose sum is σ = 8922601056. Its totient is φ = 8179050924.

The previous prime is 8550825979. The next prime is 8550825991. The reversal of 8550825989 is 9895280558.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9895280558 = 2 ⋅4947640279.

It is a cyclic number.

It is not a de Polignac number, because 8550825989 - 2¹² = 8550821893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8550825929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185887499 + ... + 185887544.

It is an arithmetic number, because the mean of its divisors is an integer number (2230650264).

Almost surely, 2^8550825989 is an apocalyptic number.

It is an amenable number.

8550825989 is a deficient number, since it is larger than the sum of its proper divisors (371775067).

8550825989 is a wasteful number, since it uses less digits than its factorization.

8550825989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371775066.

The product of its (nonzero) digits is 10368000, while the sum is 59.

The square root of 8550825989 is about 92470.6763736483. The cubic root of 8550825989 is about 2044.8871986608.

The spelling of 8550825989 in words is "eight billion, five hundred fifty million, eight hundred twenty-five thousand, nine hundred eighty-nine".