55085025209 has 8 divisors (see below), whose sum is σ = 55495249920. Its totient is φ = 54675939600.

The previous prime is 55085025199. The next prime is 55085025221. The reversal of 55085025209 is 90252058055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55085025209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55085025409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187577 + ... + 381254.

It is an arithmetic number, because the mean of its divisors is an integer number (6936906240).

Almost surely, 2^55085025209 is an apocalyptic number.

It is an amenable number.

55085025209 is a deficient number, since it is larger than the sum of its proper divisors (410224711).

55085025209 is a wasteful number, since it uses less digits than its factorization.

55085025209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569551.

The product of its (nonzero) digits is 180000, while the sum is 41.

The spelling of 55085025209 in words is "fifty-five billion, eighty-five million, twenty-five thousand, two hundred nine".