3125000020 has 24 divisors (see below), whose sum is σ = 6739866504. Its totient is φ = 1216215936.

The previous prime is 3124999979. The next prime is 3125000089. The reversal of 3125000020 is 200005213.

It can be written as a sum of positive squares in 4 ways, for example, as 1535542596 + 1589457424 = 39186^2 + 39868^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2110747 + ... + 2112226.

It is an arithmetic number, because the mean of its divisors is an integer number (280827771).

Almost surely, 2^3125000020 is an apocalyptic number.

It is an amenable number.

3125000020 is an abundant number, since it is smaller than the sum of its proper divisors (3614866484).

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

3125000020 is a wasteful number, since it uses less digits than its factorization.

3125000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4223019 (or 4223017 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 3125000020 is about 55901.6996163802. The cubic root of 3125000020 is about 1462.0088722254.

Adding to 3125000020 its reverse (200005213), we get a palindrome (3325005233).

It can be divided in two parts, 31250000 and 20, that multiplied together give a square (625000000 = 25000²).

The spelling of 3125000020 in words is "three billion, one hundred twenty-five million, twenty", and thus it is an aban number.