1252875689 has 4 divisors (see below), whose sum is σ = 1349250756. Its totient is φ = 1156500624.

The previous prime is 1252875683. The next prime is 1252875691. The reversal of 1252875689 is 9865782521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 699073600 + 553802089 = 26440^2 + 23533^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252875689 - 2⁸ = 1252875433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1252875689.

It is not an unprimeable number, because it can be changed into a prime (1252875683) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 48187514 + ... + 48187539.

It is an arithmetic number, because the mean of its divisors is an integer number (337312689).

Almost surely, 2^1252875689 is an apocalyptic number.

It is an amenable number.

1252875689 is a deficient number, since it is larger than the sum of its proper divisors (96375067).

1252875689 is an equidigital number, since it uses as much as digits as its factorization.

1252875689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96375066.

The product of its digits is 2419200, while the sum is 53.

The square root of 1252875689 is about 35395.9840801185. The cubic root of 1252875689 is about 1078.0427769083.

The spelling of 1252875689 in words is "one billion, two hundred fifty-two million, eight hundred seventy-five thousand, six hundred eighty-nine".