3125304020 has 12 divisors (see below), whose sum is σ = 6563138484. Its totient is φ = 1250121600.

The previous prime is 3125303981. The next prime is 3125304037. The reversal of 3125304020 is 204035213.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1426875076 + 1698428944 = 37774^2 + 41212^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 156265201 = 3125304020 / (3 + 1 + 2 + 5 + 3 + 0 + 4 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 3125303983 and 3125304001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78132581 + ... + 78132620.

It is an arithmetic number, because the mean of its divisors is an integer number (546928207).

Almost surely, 2^3125304020 is an apocalyptic number.

It is an amenable number.

3125304020 is an abundant number, since it is smaller than the sum of its proper divisors (3437834464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3125304020 is a wasteful number, since it uses less digits than its factorization.

3125304020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156265210 (or 156265208 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 3125304020 is about 55904.4186089078. The cubic root of 3125304020 is about 1462.0562787622.

Adding to 3125304020 its reverse (204035213), we get a palindrome (3329339233).

The spelling of 3125304020 in words is "three billion, one hundred twenty-five million, three hundred four thousand, twenty".