9803970225 has 243 divisors, whose sum is σ = 21887205249. Its totient is φ = 4182393600.

The previous prime is 9803970223. The next prime is 9803970251. The reversal of 9803970225 is 5220793089.

The square root of 9803970225 is 99015.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 4126649121 + 5677321104 = 64239^2 + 75348^2 .

It is not a de Polignac number, because 9803970225 - 2¹ = 9803970223 is a prime.

It is a super-2 number, since 2×9803970225² (a number of 21 digits) contains 22 as substring.

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 (9803970223) by changing a digit.

It is a polite number, since it can be written in 242 ways as a sum of consecutive naturals, for example, 239121205 + ... + 239121245.

Almost surely, 2^9803970225 is an apocalyptic number.

9803970225 is the 99015-th square number.

9803970225 is the 49508-th centered octagonal number.

It is an amenable number.

9803970225 is an abundant number, since it is smaller than the sum of its proper divisors (12083235024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9803970225 is a wasteful number, since it uses less digits than its factorization.

9803970225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The cubic root of 9803970225 is about 2140.2639078992.

The spelling of 9803970225 in words is "nine billion, eight hundred three million, nine hundred seventy thousand, two hundred twenty-five".