1275029125 has 16 divisors (see below), whose sum is σ = 1593818928. Its totient is φ = 1018368000.

The previous prime is 1275029123. The next prime is 1275029131. The reversal of 1275029125 is 5219205721.

It can be written as a sum of positive squares in 8 ways, for example, as 51638596 + 1223390529 = 7186^2 + 34977^2 .

It is not a de Polignac number, because 1275029125 - 2¹ = 1275029123 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 (1275029123) by changing a digit.

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, 72169 + ... + 88081.

It is an arithmetic number, because the mean of its divisors is an integer number (99613683).

Almost surely, 2^1275029125 is an apocalyptic number.

It is an amenable number.

1275029125 is a deficient number, since it is larger than the sum of its proper divisors (318789803).

1275029125 is an equidigital number, since it uses as much as digits as its factorization.

1275029125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16569 (or 16559 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 1275029125 is about 35707.5499719597. The cubic root of 1275029125 is about 1084.3596992252.

The spelling of 1275029125 in words is "one billion, two hundred seventy-five million, twenty-nine thousand, one hundred twenty-five".