55213660325 has 24 divisors (see below), whose sum is σ = 68818396680. Its totient is φ = 43943270400.

The previous prime is 55213660301. The next prime is 55213660339. The reversal of 55213660325 is 52306631255.

It can be written as a sum of positive squares in 12 ways, for example, as 8800128481 + 46413531844 = 93809^2 + 215438^2 .

It is not a de Polignac number, because 55213660325 - 2¹² = 55213656229 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6798167 + ... + 6806283.

It is an arithmetic number, because the mean of its divisors is an integer number (2867433195).

Almost surely, 2^55213660325 is an apocalyptic number.

It is an amenable number.

55213660325 is a deficient number, since it is larger than the sum of its proper divisors (13604736355).

55213660325 is a wasteful number, since it uses less digits than its factorization.

55213660325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9497 (or 9492 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 55213660325 in words is "fifty-five billion, two hundred thirteen million, six hundred sixty thousand, three hundred twenty-five".