9887319225 has 81 divisors (see below), whose sum is σ = 20622376047. Its totient is φ = 4515144480.

The previous prime is 9887319223. The next prime is 9887319241. The reversal of 9887319225 is 5229137889.

The square root of 9887319225 is 99435.

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

It can be written as a sum of positive squares in only one way, i.e., 3559434921 + 6327884304 = 59661^2 + 79548^2 .

It is not a de Polignac number, because 9887319225 - 2¹ = 9887319223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9887319223) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 10440202 + ... + 10441148.

Almost surely, 2^9887319225 is an apocalyptic number.

9887319225 is the 99435-th square number.

9887319225 is the 49718-th centered octagonal number.

It is an amenable number.

9887319225 is an abundant number, since it is smaller than the sum of its proper divisors (10735056822).

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

9887319225 is an equidigital number, since it uses as much as digits as its factorization.

9887319225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924 (or 962 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The cubic root of 9887319225 is about 2146.3119917867.

The spelling of 9887319225 in words is "nine billion, eight hundred eighty-seven million, three hundred nineteen thousand, two hundred twenty-five".