20520332210252 has 12 divisors (see below), whose sum is σ = 41040664420560. Its totient is φ = 8794428090096.

The previous prime is 20520332210251. The next prime is 20520332210281. The reversal of 20520332210252 is 25201223302502.

20520332210252 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20520332210251) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 366434503727 + ... + 366434503782.

It is an arithmetic number, because the mean of its divisors is an integer number (3420055368380).

Almost surely, 2^{20520332210252} is an apocalyptic number.

It is an amenable number.

20520332210252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20520332210252 is a wasteful number, since it uses less digits than its factorization.

20520332210252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732869007520 (or 732869007518 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 20520332210252 its reverse (25201223302502), we get a palindrome (45721555512754).

The spelling of 20520332210252 in words is "twenty trillion, five hundred twenty billion, three hundred thirty-two million, two hundred ten thousand, two hundred fifty-two".