9845208225 has 18 divisors (see below), whose sum is σ = 17633862246. Its totient is φ = 5250777600.

The previous prime is 9845208211. The next prime is 9845208229. The reversal of 9845208225 is 5228025489.

It can be written as a sum of positive squares in 3 ways, for example, as 6155361 + 9839052864 = 2481^2 + 99192^2 .

It is not a de Polignac number, because 9845208225 - 2⁷ = 9845208097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (9845208229) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21878016 + ... + 21878465.

Almost surely, 2^9845208225 is an apocalyptic number.

It is an amenable number.

9845208225 is a deficient number, since it is larger than the sum of its proper divisors (7788654021).

9845208225 is a wasteful number, since it uses less digits than its factorization.

9845208225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43756497 (or 43756489 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 9845208225 is about 99223.0226560348. The cubic root of 9845208225 is about 2143.2605422921.

The spelling of 9845208225 in words is "nine billion, eight hundred forty-five million, two hundred eight thousand, two hundred twenty-five".