3725904020 has 18 divisors (see below), whose sum is σ = 7824971742. Its totient is φ = 1490252416.

The previous prime is 3725904019. The next prime is 3725904037. The reversal of 3725904020 is 204095273.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 67831696 + 3658072324 = 8236^2 + 60482^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 266156 + ... + 279804.

Almost surely, 2^3725904020 is an apocalyptic number.

It is an amenable number.

3725904020 is an abundant number, since it is smaller than the sum of its proper divisors (4099067722).

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

3725904020 is an frugal number, since it uses more digits than its factorization.

3725904020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27307 (or 13656 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 3725904020 is about 61040.1836497893. The cubic root of 3725904020 is about 1550.2814639744.

Adding to 3725904020 its reverse (204095273), we get a palindrome (3929999293).

The spelling of 3725904020 in words is "three billion, seven hundred twenty-five million, nine hundred four thousand, twenty".