20555210325 has 96 divisors (see below), whose sum is σ = 39567606400. Its totient is φ = 9327467520.

The previous prime is 20555210317. The next prime is 20555210341. The reversal of 20555210325 is 52301255502.

It is not a de Polignac number, because 20555210325 - 2³ = 20555210317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20555210292 and 20555210301.

It is a congruent number.

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 in 95 ways as a sum of consecutive naturals, for example, 670431 + ... + 700419.

Almost surely, 2^20555210325 is an apocalyptic number.

20555210325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20555210325 is a deficient number, since it is larger than the sum of its proper divisors (19012396075).

20555210325 is a wasteful number, since it uses less digits than its factorization.

20555210325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30071 (or 30066 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

Adding to 20555210325 its reverse (52301255502), we get a palindrome (72856465827).

The spelling of 20555210325 in words is "twenty billion, five hundred fifty-five million, two hundred ten thousand, three hundred twenty-five".