6998320225 has 12 divisors (see below), whose sum is σ = 9345449596. Its totient is φ = 5167990080.

The previous prime is 6998320201. The next prime is 6998320237. The reversal of 6998320225 is 5220238996.

It can be written as a sum of positive squares in 6 ways, for example, as 692689761 + 6305630464 = 26319^2 + 79408^2 .

It is not a de Polignac number, because 6998320225 - 2¹³ = 6998312033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10766322 + ... + 10766971.

Almost surely, 2^6998320225 is an apocalyptic number.

6998320225 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6998320225 is a deficient number, since it is larger than the sum of its proper divisors (2347129371).

6998320225 is a wasteful number, since it uses less digits than its factorization.

6998320225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21533316 (or 21533311 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 6998320225 is about 83655.9634754152. The cubic root of 6998320225 is about 1912.7781565323.

The spelling of 6998320225 in words is "six billion, nine hundred ninety-eight million, three hundred twenty thousand, two hundred twenty-five".