1275137525 has 12 divisors (see below), whose sum is σ = 1584614724. Its totient is φ = 1017888000.

The previous prime is 1275137509. The next prime is 1275137527. The reversal of 1275137525 is 5257315721.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 83576164 + 1191561361 = 9142^2 + 34519^2 .

It is not a de Polignac number, because 1275137525 - 2⁴ = 1275137509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275137527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43796 + ... + 66845.

It is an arithmetic number, because the mean of its divisors is an integer number (132051227).

Almost surely, 2^1275137525 is an apocalyptic number.

It is an amenable number.

1275137525 is a deficient number, since it is larger than the sum of its proper divisors (309477199).

1275137525 is a wasteful number, since it uses less digits than its factorization.

1275137525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111112 (or 111107 counting only the distinct ones).

The product of its digits is 73500, while the sum is 38.

The square root of 1275137525 is about 35709.0678259738. The cubic root of 1275137525 is about 1084.3904282645.

The spelling of 1275137525 in words is "one billion, two hundred seventy-five million, one hundred thirty-seven thousand, five hundred twenty-five".