20522204452 has 12 divisors (see below), whose sum is σ = 36789805836. Its totient is φ = 10010831360.

The previous prime is 20522204429. The next prime is 20522204471. The reversal of 20522204452 is 25440222502.

It can be written as a sum of positive squares in 2 ways, for example, as 7875852516 + 12646351936 = 88746^2 + 112456^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20522204452.

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, 62567533 + ... + 62567860.

It is an arithmetic number, because the mean of its divisors is an integer number (3065817153).

Almost surely, 2^20522204452 is an apocalyptic number.

It is an amenable number.

20522204452 is a deficient number, since it is larger than the sum of its proper divisors (16267601384).

20522204452 is a wasteful number, since it uses less digits than its factorization.

20522204452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125135438 (or 125135436 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 28.

Adding to 20522204452 its reverse (25440222502), we get a palindrome (45962426954).

The spelling of 20522204452 in words is "twenty billion, five hundred twenty-two million, two hundred four thousand, four hundred fifty-two".