2642172125 has 8 divisors (see below), whose sum is σ = 3297430968. Its totient is φ = 2113737600.

The previous prime is 2642172073. The next prime is 2642172199. The reversal of 2642172125 is 5212712462.

It can be written as a sum of positive squares in 4 ways, for example, as 62141689 + 2580030436 = 7883^2 + 50794^2 .

It is not a de Polignac number, because 2642172125 - 2¹⁰ = 2642171101 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 = 2642172091 and 2642172100.

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 7 ways as a sum of consecutive naturals, for example, 10568564 + ... + 10568813.

It is an arithmetic number, because the mean of its divisors is an integer number (412178871).

Almost surely, 2^2642172125 is an apocalyptic number.

2642172125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2642172125 is a deficient number, since it is larger than the sum of its proper divisors (655258843).

2642172125 is an equidigital number, since it uses as much as digits as its factorization.

2642172125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21137392 (or 21137382 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 2642172125 is about 51402.0634313449. The cubic root of 2642172125 is about 1382.4635901497.

Adding to 2642172125 its reverse (5212712462), we get a palindrome (7854884587).

The spelling of 2642172125 in words is "two billion, six hundred forty-two million, one hundred seventy-two thousand, one hundred twenty-five".