55113521225 has 48 divisors (see below), whose sum is σ = 80096540160. Its totient is φ = 36829900800.

The previous prime is 55113521209. The next prime is 55113521231. The reversal of 55113521225 is 52212531155.

It is not a de Polignac number, because 55113521225 - 2⁴ = 55113521209 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55113521191 and 55113521200.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7451129 + ... + 7458521.

It is an arithmetic number, because the mean of its divisors is an integer number (1668677920).

Almost surely, 2^55113521225 is an apocalyptic number.

It is an amenable number.

55113521225 is a deficient number, since it is larger than the sum of its proper divisors (24983018935).

55113521225 is a wasteful number, since it uses less digits than its factorization.

55113521225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8490 (or 8485 counting only the distinct ones).

The product of its digits is 15000, while the sum is 32.

The spelling of 55113521225 in words is "fifty-five billion, one hundred thirteen million, five hundred twenty-one thousand, two hundred twenty-five".