3125821201 has 4 divisors (see below), whose sum is σ = 3126038452. Its totient is φ = 3125603952.

The previous prime is 3125821177. The next prime is 3125821207. The reversal of 3125821201 is 1021285213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56550400 + 3069270801 = 7520^2 + 55401^2 .

It is a cyclic number.

It is not a de Polignac number, because 3125821201 - 2⁵ = 3125821169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3125821207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85386 + ... + 116371.

It is an arithmetic number, because the mean of its divisors is an integer number (781509613).

Almost surely, 2^3125821201 is an apocalyptic number.

It is an amenable number.

3125821201 is a deficient number, since it is larger than the sum of its proper divisors (217251).

3125821201 is a wasteful number, since it uses less digits than its factorization.

3125821201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217250.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 3125821201 is about 55909.0440000542. The cubic root of 3125821201 is about 1462.1369222258.

The spelling of 3125821201 in words is "three billion, one hundred twenty-five million, eight hundred twenty-one thousand, two hundred one".