3725332921 has 2 divisors, whose sum is σ = 3725332922. Its totient is φ = 3725332920.

The previous prime is 3725332909. The next prime is 3725332981. The reversal of 3725332921 is 1292335273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3695302521 + 30030400 = 60789^2 + 5480^2 .

It is a cyclic number.

It is not a de Polignac number, because 3725332921 - 2²³ = 3716944313 is a prime.

It is not a weakly prime, because it can be changed into another prime (3725332981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1862666460 + 1862666461.

It is an arithmetic number, because the mean of its divisors is an integer number (1862666461).

Almost surely, 2^3725332921 is an apocalyptic number.

It is an amenable number.

3725332921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3725332921 is an equidigital number, since it uses as much as digits as its factorization.

3725332921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 37.

The square root of 3725332921 is about 61035.5054128333. The cubic root of 3725332921 is about 1550.2022519292.

The spelling of 3725332921 in words is "three billion, seven hundred twenty-five million, three hundred thirty-two thousand, nine hundred twenty-one".