8198190625 has 12 divisors (see below), whose sum is σ = 10247086332. Its totient is φ = 6558550000.

The previous prime is 8198190607. The next prime is 8198190647. The reversal of 8198190625 is 5260918918.

It can be written as a sum of positive squares in 6 ways, for example, as 7966633536 + 231557089 = 89256^2 + 15217^2 .

It is not a de Polignac number, because 8198190625 - 2⁵ = 8198190593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1308586 + ... + 1314835.

It is an arithmetic number, because the mean of its divisors is an integer number (853923861).

Almost surely, 2^8198190625 is an apocalyptic number.

It is an amenable number.

8198190625 is a deficient number, since it is larger than the sum of its proper divisors (2048895707).

8198190625 is an frugal number, since it uses more digits than its factorization.

8198190625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623446 (or 2623426 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 49.

The square root of 8198190625 is about 90543.8602280685. The cubic root of 8198190625 is about 2016.3813448612.

The spelling of 8198190625 in words is "eight billion, one hundred ninety-eight million, one hundred ninety thousand, six hundred twenty-five".