1799800225 has 6 divisors (see below), whose sum is σ = 2231752310. Its totient is φ = 1439840160.

The previous prime is 1799800157. The next prime is 1799800237. The reversal of 1799800225 is 5220089971.

It can be written as a sum of positive squares in 3 ways, for example, as 303735184 + 1496065041 = 17428^2 + 38679^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1799800225 is a prime.

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, 35995980 + ... + 35996029.

Almost surely, 2^1799800225 is an apocalyptic number.

It is an amenable number.

1799800225 is a deficient number, since it is larger than the sum of its proper divisors (431952085).

1799800225 is an equidigital number, since it uses as much as digits as its factorization.

1799800225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71992019 (or 71992014 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 1799800225 is about 42424.0524349101. The cubic root of 1799800225 is about 1216.3953947866.

The spelling of 1799800225 in words is "one billion, seven hundred ninety-nine million, eight hundred thousand, two hundred twenty-five".