1249271125 has 8 divisors (see below), whose sum is σ = 1559090520. Its totient is φ = 999416800.

The previous prime is 1249271113. The next prime is 1249271143. The reversal of 1249271125 is 5211729421.

It can be written as a sum of positive squares in 4 ways, for example, as 26440164 + 1222830961 = 5142^2 + 34969^2 .

It is not a de Polignac number, because 1249271125 - 2¹³ = 1249262933 is a prime.

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, 4996960 + ... + 4997209.

It is an arithmetic number, because the mean of its divisors is an integer number (194886315).

Almost surely, 2^1249271125 is an apocalyptic number.

It is an amenable number.

1249271125 is a deficient number, since it is larger than the sum of its proper divisors (309819395).

1249271125 is an frugal number, since it uses more digits than its factorization.

1249271125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9994184 (or 9994174 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The square root of 1249271125 is about 35345.0297071597. The cubic root of 1249271125 is about 1077.0079291626.

The spelling of 1249271125 in words is "one billion, two hundred forty-nine million, two hundred seventy-one thousand, one hundred twenty-five".