11220188619025 has 9 divisors (see below), whose sum is σ = 13913054655483. Its totient is φ = 8976137496600.

The previous prime is 11220188619023. The next prime is 11220188619061. The reversal of 11220188619025 is 52091688102211.

The square root of 11220188619025 is 3349655.

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., 4039267902849 + 7180920716176 = 2009793^2 + 2679724^2 .

It is not a de Polignac number, because 11220188619025 - 2¹ = 11220188619023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11220188619023) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16413310 + ... + 17083240.

Almost surely, 2^{11220188619025} is an apocalyptic number.

11220188619025 is the 3349655-th square number.

11220188619025 is the 1674828-th centered octagonal number.

It is an amenable number.

11220188619025 is a deficient number, since it is larger than the sum of its proper divisors (2692866036458).

11220188619025 is an frugal number, since it uses more digits than its factorization.

11220188619025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339872 (or 669936 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 46.

The spelling of 11220188619025 in words is "eleven trillion, two hundred twenty billion, one hundred eighty-eight million, six hundred nineteen thousand, twenty-five".