20345032322225 has 24 divisors (see below), whose sum is σ = 27408871912632. Its totient is φ = 14891067878400.

The previous prime is 20345032322203. The next prime is 20345032322297. The reversal of 20345032322225 is 52222323054302.

It can be written as a sum of positive squares in 12 ways, for example, as 10315453685824 + 10029578636401 = 3211768^2 + 3166951^2 .

It is not a de Polignac number, because 20345032322225 - 2¹⁴ = 20345032305841 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 276954866 + ... + 277028315.

It is an arithmetic number, because the mean of its divisors is an integer number (1142036329693).

Almost surely, 2^{20345032322225} is an apocalyptic number.

20345032322225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20345032322225 is a deficient number, since it is larger than the sum of its proper divisors (7063839590407).

20345032322225 is a wasteful number, since it uses less digits than its factorization.

20345032322225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553983317 (or 553983312 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 35.

Adding to 20345032322225 its reverse (52222323054302), we get a palindrome (72567355376527).

The spelling of 20345032322225 in words is "twenty trillion, three hundred forty-five billion, thirty-two million, three hundred twenty-two thousand, two hundred twenty-five".