20450025534506 has 4 divisors (see below), whose sum is σ = 30675038301762. Its totient is φ = 10225012767252.

The previous prime is 20450025534493. The next prime is 20450025534569. The reversal of 20450025534506 is 60543552005402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19203808306225 + 1246217228281 = 4382215^2 + 1116341^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5112506383625 + ... + 5112506383628.

Almost surely, 2^{20450025534506} is an apocalyptic number.

20450025534506 is a deficient number, since it is larger than the sum of its proper divisors (10225012767256).

20450025534506 is a wasteful number, since it uses less digits than its factorization.

20450025534506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10225012767255.

The product of its (nonzero) digits is 720000, while the sum is 41.

Adding to 20450025534506 its reverse (60543552005402), we get a palindrome (80993577539908).

The spelling of 20450025534506 in words is "twenty trillion, four hundred fifty billion, twenty-five million, five hundred thirty-four thousand, five hundred six".