9871190004025 has 27 divisors (see below), whose sum is σ = 14238846568719. Its totient is φ = 6768740598480.

The previous prime is 9871190004023. The next prime is 9871190004043. The reversal of 9871190004025 is 5204000911789.

The square root of 9871190004025 is 3141845.

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., 3553628401449 + 6317561602576 = 1885107^2 + 2513476^2 .

It is not a de Polignac number, because 9871190004025 - 2¹ = 9871190004023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9871190004023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 109919692 + ... + 110009458.

Almost surely, 2^{9871190004025} is an apocalyptic number.

9871190004025 is the 3141845-th square number.

9871190004025 is the 1570923-rd centered octagonal number.

It is an amenable number.

9871190004025 is a deficient number, since it is larger than the sum of its proper divisors (4367656564694).

9871190004025 is an frugal number, since it uses more digits than its factorization.

9871190004025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179558 (or 89779 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 46.

The spelling of 9871190004025 in words is "nine trillion, eight hundred seventy-one billion, one hundred ninety million, four thousand, twenty-five".