20028637325 has 24 divisors (see below), whose sum is σ = 25660071936. Its totient is φ = 15491880000.

The previous prime is 20028637319. The next prime is 20028637367. The reversal of 20028637325 is 52373682002.

It is not a de Polignac number, because 20028637325 - 2³⁴ = 2848768141 is a prime.

It is a super-2 number, since 2×20028637325² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent 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, 880799 + ... + 903251.

It is an arithmetic number, because the mean of its divisors is an integer number (1069169664).

Almost surely, 2^20028637325 is an apocalyptic number.

20028637325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20028637325 is a deficient number, since it is larger than the sum of its proper divisors (5631434611).

20028637325 is a wasteful number, since it uses less digits than its factorization.

20028637325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23645 (or 23640 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 20028637325 in words is "twenty billion, twenty-eight million, six hundred thirty-seven thousand, three hundred twenty-five".