20255505244 has 24 divisors (see below), whose sum is σ = 38315773440. Its totient is φ = 9313934784.

The previous prime is 20255505239. The next prime is 20255505251. The reversal of 20255505244 is 44250555202.

It is a super-2 number, since 2×20255505244² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 710044 + ... + 738019.

It is an arithmetic number, because the mean of its divisors is an integer number (1596490560).

Almost surely, 2^20255505244 is an apocalyptic number.

It is an amenable number.

20255505244 is a deficient number, since it is larger than the sum of its proper divisors (18060268196).

20255505244 is a wasteful number, since it uses less digits than its factorization.

20255505244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448349 (or 1448347 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 34.

The spelling of 20255505244 in words is "twenty billion, two hundred fifty-five million, five hundred five thousand, two hundred forty-four".