1252967909 has 2 divisors, whose sum is σ = 1252967910. Its totient is φ = 1252967908.

The previous prime is 1252967893. The next prime is 1252967929. The reversal of 1252967909 is 9097692521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1048334884 + 204633025 = 32378^2 + 14305^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252967909 - 2⁴ = 1252967893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252967929) 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 as a sum of consecutive naturals, namely, 626483954 + 626483955.

It is an arithmetic number, because the mean of its divisors is an integer number (626483955).

Almost surely, 2^1252967909 is an apocalyptic number.

It is an amenable number.

1252967909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252967909 is an equidigital number, since it uses as much as digits as its factorization.

1252967909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360, while the sum is 50.

The square root of 1252967909 is about 35397.2867463030. The cubic root of 1252967909 is about 1078.0692266369.

The spelling of 1252967909 in words is "one billion, two hundred fifty-two million, nine hundred sixty-seven thousand, nine hundred nine".