8499155825 has 6 divisors (see below), whose sum is σ = 10538953254. Its totient is φ = 6799324640.

The previous prime is 8499155813. The next prime is 8499155857. The reversal of 8499155825 is 5285519948.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2967961441 + 5531194384 = 54479^2 + 74372^2 .

It is not a de Polignac number, because 8499155825 - 2⁴ = 8499155809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 169983092 + ... + 169983141.

It is an arithmetic number, because the mean of its divisors is an integer number (1756492209).

Almost surely, 2^8499155825 is an apocalyptic number.

It is an amenable number.

8499155825 is a deficient number, since it is larger than the sum of its proper divisors (2039797429).

8499155825 is a wasteful number, since it uses less digits than its factorization.

8499155825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339966243 (or 339966238 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 56.

The square root of 8499155825 is about 92190.8662775223. The cubic root of 8499155825 is about 2040.7599873259.

The spelling of 8499155825 in words is "eight billion, four hundred ninety-nine million, one hundred fifty-five thousand, eight hundred twenty-five".