550550444225 has 12 divisors (see below), whose sum is σ = 688723992876. Its totient is φ = 436542650880.

The previous prime is 550550444221. The next prime is 550550444273. The reversal of 550550444225 is 522444055055.

It can be written as a sum of positive squares in 6 ways, for example, as 46200493249 + 504349950976 = 214943^2 + 710176^2 .

It is not a de Polignac number, because 550550444225 - 2² = 550550444221 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550550444221) 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, 97439732 + ... + 97445381.

It is an arithmetic number, because the mean of its divisors is an integer number (57393666073).

Almost surely, 2^550550444225 is an apocalyptic number.

It is an amenable number.

550550444225 is a deficient number, since it is larger than the sum of its proper divisors (138173548651).

550550444225 is a wasteful number, since it uses less digits than its factorization.

550550444225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194885236 (or 194885231 counting only the distinct ones).

The product of its (nonzero) digits is 800000, while the sum is 41.

The spelling of 550550444225 in words is "five hundred fifty billion, five hundred fifty million, four hundred forty-four thousand, two hundred twenty-five".