11520802225 has 9 divisors (see below), whose sum is σ = 14286460267. Its totient is φ = 9216212440.

The previous prime is 11520802217. The next prime is 11520802253. The reversal of 11520802225 is 52220802511.

The square root of 11520802225 is 107335.

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., 4147488801 + 7373313424 = 64401^2 + 85868^2 .

It is not a de Polignac number, because 11520802225 - 2³ = 11520802217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11520802193 and 11520802202.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 525942 + ... + 547408.

Almost surely, 2^11520802225 is an apocalyptic number.

11520802225 is the 107335-th square number.

11520802225 is the 53668-th centered octagonal number.

It is an amenable number.

11520802225 is a deficient number, since it is larger than the sum of its proper divisors (2765658042).

11520802225 is an frugal number, since it uses more digits than its factorization.

11520802225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42944 (or 21472 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The spelling of 11520802225 in words is "eleven billion, five hundred twenty million, eight hundred two thousand, two hundred twenty-five".