3172901225 has 12 divisors (see below), whose sum is σ = 4237043916. Its totient is φ = 2343065280.

The previous prime is 3172901197. The next prime is 3172901261. The reversal of 3172901225 is 5221092713.

It can be written as a sum of positive squares in 6 ways, for example, as 355096336 + 2817804889 = 18844^2 + 53083^2 .

It is not a de Polignac number, because 3172901225 - 2¹⁶ = 3172835689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3172901191 and 3172901200.

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 11 ways as a sum of consecutive naturals, for example, 4881062 + ... + 4881711.

It is an arithmetic number, because the mean of its divisors is an integer number (353086993).

Almost surely, 2^3172901225 is an apocalyptic number.

It is an amenable number.

3172901225 is a deficient number, since it is larger than the sum of its proper divisors (1064142691).

3172901225 is a wasteful number, since it uses less digits than its factorization.

3172901225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9762796 (or 9762791 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 3172901225 is about 56328.5116526258. The cubic root of 3172901225 is about 1469.4411044238.

Adding to 3172901225 its reverse (5221092713), we get a palindrome (8393993938).

The spelling of 3172901225 in words is "three billion, one hundred seventy-two million, nine hundred one thousand, two hundred twenty-five".