11553807617225 has 12 divisors (see below), whose sum is σ = 14326771402944. Its totient is φ = 9243013863120.

The previous prime is 11553807617167. The next prime is 11553807617227. The reversal of 11553807617225 is 52271670835511.

It is a happy number.

It is not a de Polignac number, because 11553807617225 - 2⁸ = 11553807616969 is a prime.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11553807617227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8711012 + ... + 9949338.

It is an arithmetic number, because the mean of its divisors is an integer number (1193897616912).

Almost surely, 2^{11553807617225} is an apocalyptic number.

It is an amenable number.

11553807617225 is a deficient number, since it is larger than the sum of its proper divisors (2772963785719).

11553807617225 is a wasteful number, since it uses less digits than its factorization.

11553807617225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611544 (or 1611539 counting only the distinct ones).

The product of its (nonzero) digits is 3528000, while the sum is 53.

The spelling of 11553807617225 in words is "eleven trillion, five hundred fifty-three billion, eight hundred seven million, six hundred seventeen thousand, two hundred twenty-five".