55225620165 has 16 divisors (see below), whose sum is σ = 90241014528. Its totient is φ = 28826990016.

The previous prime is 55225620161. The next prime is 55225620209. The reversal of 55225620165 is 56102652255.

It is not a de Polignac number, because 55225620165 - 2² = 55225620161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55225620161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39166402 + ... + 39167811.

It is an arithmetic number, because the mean of its divisors is an integer number (5640063408).

Almost surely, 2^55225620165 is an apocalyptic number.

It is an amenable number.

55225620165 is a deficient number, since it is larger than the sum of its proper divisors (35015394363).

55225620165 is a wasteful number, since it uses less digits than its factorization.

55225620165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78334268.

The product of its (nonzero) digits is 180000, while the sum is 39.

The spelling of 55225620165 in words is "fifty-five billion, two hundred twenty-five million, six hundred twenty thousand, one hundred sixty-five".