20525552445352 has 64 divisors (see below), whose sum is σ = 39595158720000. Its totient is φ = 9970090707456.

The previous prime is 20525552445317. The next prime is 20525552445383. The reversal of 20525552445352 is 25354425552502.

It is a junction number, because it is equal to n+sod(n) for n = 20525552445296 and 20525552445305.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 877186149 + ... + 877209547.

It is an arithmetic number, because the mean of its divisors is an integer number (618674355000).

Almost surely, 2^{20525552445352} is an apocalyptic number.

It is an amenable number.

20525552445352 is a deficient number, since it is larger than the sum of its proper divisors (19069606274648).

20525552445352 is a wasteful number, since it uses less digits than its factorization.

20525552445352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40618 (or 40614 counting only the distinct ones).

The product of its (nonzero) digits is 12000000, while the sum is 49.

Adding to 20525552445352 its reverse (25354425552502), we get a palindrome (45879977997854).

The spelling of 20525552445352 in words is "twenty trillion, five hundred twenty-five billion, five hundred fifty-two million, four hundred forty-five thousand, three hundred fifty-two".