30920785825 has 12 divisors (see below), whose sum is σ = 38345006700. Its totient is φ = 24734543360.

The previous prime is 30920785813. The next prime is 30920785843. The reversal of 30920785825 is 52858702903.

It can be written as a sum of positive squares in 6 ways, for example, as 2486929 + 30918298896 = 1577^2 + 175836^2 .

It is not a de Polignac number, because 30920785825 - 2¹³ = 30920777633 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 295917 + ... + 386533.

It is an arithmetic number, because the mean of its divisors is an integer number (3195417225).

Almost surely, 2^30920785825 is an apocalyptic number.

It is an amenable number.

30920785825 is a deficient number, since it is larger than the sum of its proper divisors (7424220875).

30920785825 is a wasteful number, since it uses less digits than its factorization.

30920785825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104276 (or 104271 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 49.

It can be divided in two parts, 3092078 and 5825, that added together give a palindrome (3097903).

The spelling of 30920785825 in words is "thirty billion, nine hundred twenty million, seven hundred eighty-five thousand, eight hundred twenty-five".