11520016633225 has 9 divisors (see below), whose sum is σ = 14284841668743. Its totient is φ = 9215999730120.

The previous prime is 11520016633217. The next prime is 11520016633243. The reversal of 11520016633225 is 52233661002511.

The square root of 11520016633225 is 3394115.

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., 4147205987961 + 7372810645264 = 2036469^2 + 2715292^2 .

It is not a de Polignac number, because 11520016633225 - 2³ = 11520016633217 is a prime.

It is a Duffinian number.

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, 16631164 + ... + 17309986.

Almost surely, 2^{11520016633225} is an apocalyptic number.

11520016633225 is the 3394115-th square number.

11520016633225 is the 1697058-th centered octagonal number.

It is an amenable number.

11520016633225 is a deficient number, since it is larger than the sum of its proper divisors (2764825035518).

11520016633225 is an frugal number, since it uses more digits than its factorization.

11520016633225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357656 (or 678828 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

Adding to 11520016633225 its reverse (52233661002511), we get a palindrome (63753677635736).

The spelling of 11520016633225 in words is "eleven trillion, five hundred twenty billion, sixteen million, six hundred thirty-three thousand, two hundred twenty-five".