3200020825 has 6 divisors (see below), whose sum is σ = 3968025854. Its totient is φ = 2560016640.

The previous prime is 3200020807. The next prime is 3200020829. The reversal of 3200020825 is 5280200023.

It can be written as a sum of positive squares in 3 ways, for example, as 647346249 + 2552674576 = 25443^2 + 50524^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3200020825 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3200020796 and 3200020805.

It is not an unprimeable number, because it can be changed into a prime (3200020829) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 64000392 + ... + 64000441.

Almost surely, 2^3200020825 is an apocalyptic number.

It is an amenable number.

3200020825 is a deficient number, since it is larger than the sum of its proper divisors (768005029).

3200020825 is a wasteful number, since it uses less digits than its factorization.

3200020825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128000843 (or 128000838 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 3200020825 is about 56568.7265633583. The cubic root of 3200020825 is about 1473.6157961141.

Adding to 3200020825 its reverse (5280200023), we get a palindrome (8480220848).

It can be divided in two parts, 32000 and 20825, that added together give a palindrome (52825).

The spelling of 3200020825 in words is "three billion, two hundred million, twenty thousand, eight hundred twenty-five".