20394588825 has 36 divisors (see below), whose sum is σ = 39338901420. Its totient is φ = 10040411520.

The previous prime is 20394588793. The next prime is 20394588827. The reversal of 20394588825 is 52888549302.

It is a happy number.

20394588825 is a `hidden beast` number, since 2 + 0 + 39 + 4 + 588 + 8 + 25 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 3398773401 + 16995815424 = 58299^2 + 130368^2 .

It is not a de Polignac number, because 20394588825 - 2⁵ = 20394588793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20394588827) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3483330 + ... + 3489179.

Almost surely, 2^20394588825 is an apocalyptic number.

20394588825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20394588825 is a deficient number, since it is larger than the sum of its proper divisors (18944312595).

20394588825 is a wasteful number, since it uses less digits than its factorization.

20394588825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6972538 (or 6972530 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 20394588825 in words is "twenty billion, three hundred ninety-four million, five hundred eighty-eight thousand, eight hundred twenty-five".