55317420524225 has 12 divisors (see below), whose sum is σ = 69420030385776. Its totient is φ = 43720756460880.

The previous prime is 55317420524167. The next prime is 55317420524227. The reversal of 55317420524225 is 52242502471355.

It is not a de Polignac number, because 55317420524225 - 2¹⁸ = 55317420262081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55317420524225.

It is not an unprimeable number, because it can be changed into a prime (55317420524227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13329496847 + ... + 13329500996.

It is an arithmetic number, because the mean of its divisors is an integer number (5785002532148).

Almost surely, 2^{55317420524225} is an apocalyptic number.

It is an amenable number.

55317420524225 is a deficient number, since it is larger than the sum of its proper divisors (14102609861551).

55317420524225 is a wasteful number, since it uses less digits than its factorization.

55317420524225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26658997936 (or 26658997931 counting only the distinct ones).

The product of its (nonzero) digits is 3360000, while the sum is 47.

The spelling of 55317420524225 in words is "fifty-five trillion, three hundred seventeen billion, four hundred twenty million, five hundred twenty-four thousand, two hundred twenty-five".