11598213025 has 81 divisors (see below), whose sum is σ = 17870556267. Its totient is φ = 7443878400.

The previous prime is 11598212999. The next prime is 11598213031. The reversal of 11598213025 is 52031289511.

The square root of 11598213025 is 107695.

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

It can be written as a sum of positive squares in 13 ways, for example, as 10839100321 + 759112704 = 104111^2 + 27552^2 .

It is not a de Polignac number, because 11598213025 - 2²⁷ = 11463995297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 80 ways as a sum of consecutive naturals, for example, 64078435 + ... + 64078615.

Almost surely, 2^11598213025 is an apocalyptic number.

11598213025 is the 107695-th square number.

11598213025 is the 53848-th centered octagonal number.

It is an amenable number.

11598213025 is a deficient number, since it is larger than the sum of its proper divisors (6272343242).

11598213025 is an equidigital number, since it uses as much as digits as its factorization.

With its predecessor (11598213024) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (420).

11598213025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 37.

The spelling of 11598213025 in words is "eleven billion, five hundred ninety-eight million, two hundred thirteen thousand, twenty-five".