3640172125 has 16 divisors (see below), whose sum is σ = 4553542656. Its totient is φ = 2905338000.

The previous prime is 3640172101. The next prime is 3640172143. The reversal of 3640172125 is 5212710463.

It is not a de Polignac number, because 3640172125 - 2²⁹ = 3103301213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20092 + ... + 87658.

It is an arithmetic number, because the mean of its divisors is an integer number (284596416).

Almost surely, 2^3640172125 is an apocalyptic number.

It is an amenable number.

3640172125 is a deficient number, since it is larger than the sum of its proper divisors (913370531).

3640172125 is an equidigital number, since it uses as much as digits as its factorization.

3640172125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68013 (or 68003 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 3640172125 is about 60333.8389711777. The cubic root of 3640172125 is about 1538.2985826520.

Adding to 3640172125 its reverse (5212710463), we get a palindrome (8852882588).

The spelling of 3640172125 in words is "three billion, six hundred forty million, one hundred seventy-two thousand, one hundred twenty-five".