220425545550 has 48 divisors (see below), whose sum is σ = 624748977792. Its totient is φ = 50382981600.

The previous prime is 220425545531. The next prime is 220425545567. The reversal of 220425545550 is 55545524022.

It is a super-2 number, since 2×220425545550² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 220425545499 and 220425545508.

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, 104963496 + ... + 104965595.

It is an arithmetic number, because the mean of its divisors is an integer number (13015603704).

Almost surely, 2^220425545550 is an apocalyptic number.

220425545550 is an abundant number, since it is smaller than the sum of its proper divisors (404323432242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220425545550 is a wasteful number, since it uses less digits than its factorization.

220425545550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209929113 (or 209929108 counting only the distinct ones).

The product of its (nonzero) digits is 400000, while the sum is 39.

The spelling of 220425545550 in words is "two hundred twenty billion, four hundred twenty-five million, five hundred forty-five thousand, five hundred fifty".