9811893025 has 27 divisors (see below), whose sum is σ = 13380796569. Its totient is φ = 7131960000.

The previous prime is 9811893023. The next prime is 9811893041. The reversal of 9811893025 is 5203981189.

The square root of 9811893025 is 99055.

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 2756565009 + 7055328016 = 52503^2 + 83996^2 .

It is not a de Polignac number, because 9811893025 - 2¹ = 9811893023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9811893023) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5447125 + ... + 5448925.

Almost surely, 2^9811893025 is an apocalyptic number.

9811893025 is the 99055-th square number.

9811893025 is the 49528-th centered octagonal number.

It is an amenable number.

9811893025 is a deficient number, since it is larger than the sum of its proper divisors (3568903544).

9811893025 is an equidigital number, since it uses as much as digits as its factorization.

9811893025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3634 (or 1817 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 46.

The cubic root of 9811893025 is about 2140.8402838234.

The spelling of 9811893025 in words is "nine billion, eight hundred eleven million, eight hundred ninety-three thousand, twenty-five".