1272252125 has 8 divisors (see below), whose sum is σ = 1587770808. Its totient is φ = 1017801600.

The previous prime is 1272252101. The next prime is 1272252131. The reversal of 1272252125 is 5212522721.

It can be written as a sum of positive squares in 4 ways, for example, as 348456889 + 923795236 = 18667^2 + 30394^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1272252125 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5088884 + ... + 5089133.

It is an arithmetic number, because the mean of its divisors is an integer number (198471351).

Almost surely, 2^1272252125 is an apocalyptic number.

It is an amenable number.

1272252125 is a deficient number, since it is larger than the sum of its proper divisors (315518683).

1272252125 is an equidigital number, since it uses as much as digits as its factorization.

1272252125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10178032 (or 10178022 counting only the distinct ones).

The product of its digits is 5600, while the sum is 29.

The square root of 1272252125 is about 35668.6434421047. The cubic root of 1272252125 is about 1083.5718856650.

Adding to 1272252125 its reverse (5212522721), we get a palindrome (6484774846).

The spelling of 1272252125 in words is "one billion, two hundred seventy-two million, two hundred fifty-two thousand, one hundred twenty-five".