1252164289 has 2 divisors, whose sum is σ = 1252164290. Its totient is φ = 1252164288.

The previous prime is 1252164269. The next prime is 1252164293. The reversal of 1252164289 is 9824612521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 811794064 + 440370225 = 28492^2 + 20985^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252164289 - 2¹⁷ = 1252033217 is a prime.

It is not a weakly prime, because it can be changed into another prime (1252164209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626082144 + 626082145.

It is an arithmetic number, because the mean of its divisors is an integer number (626082145).

Almost surely, 2^1252164289 is an apocalyptic number.

It is an amenable number.

1252164289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252164289 is an equidigital number, since it uses as much as digits as its factorization.

1252164289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 40.

The square root of 1252164289 is about 35385.9334905835. The cubic root of 1252164289 is about 1077.8386957852.

The spelling of 1252164289 in words is "one billion, two hundred fifty-two million, one hundred sixty-four thousand, two hundred eighty-nine".