11080720225 has 27 divisors (see below), whose sum is σ = 14146345227. Its totient is φ = 8609834880.

The previous prime is 11080720169. The next prime is 11080720247. The reversal of 11080720225 is 52202708011.

The square root of 11080720225 is 105265.

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 6139192609 + 4941527616 = 78353^2 + 70296^2 .

It is not a de Polignac number, because 11080720225 - 2¹¹ = 11080718177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11080720193 and 11080720202.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 19473741 + ... + 19474309.

Almost surely, 2^11080720225 is an apocalyptic number.

11080720225 is the 105265-th square number.

11080720225 is the 52633-rd centered octagonal number.

It is an amenable number.

11080720225 is a deficient number, since it is larger than the sum of its proper divisors (3065625002).

11080720225 is an frugal number, since it uses more digits than its factorization.

11080720225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The spelling of 11080720225 in words is "eleven billion, eighty million, seven hundred twenty thousand, two hundred twenty-five".