20555441252 has 12 divisors (see below), whose sum is σ = 36061730796. Its totient is φ = 10252089600.

The previous prime is 20555441243. The next prime is 20555441287. The reversal of 20555441252 is 25214455502.

It can be written as a sum of positive squares in 2 ways, for example, as 15224104996 + 5331336256 = 123386^2 + 73016^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6405953 + ... + 6409160.

It is an arithmetic number, because the mean of its divisors is an integer number (3005144233).

Almost surely, 2^20555441252 is an apocalyptic number.

It is an amenable number.

20555441252 is a deficient number, since it is larger than the sum of its proper divisors (15506289544).

20555441252 is a wasteful number, since it uses less digits than its factorization.

20555441252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12815518 (or 12815516 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

Adding to 20555441252 its reverse (25214455502), we get a palindrome (45769896754).

The spelling of 20555441252 in words is "twenty billion, five hundred fifty-five million, four hundred forty-one thousand, two hundred fifty-two".