1252957493 has 2 divisors, whose sum is σ = 1252957494. Its totient is φ = 1252957492.

The previous prime is 1252957483. The next prime is 1252957561. The reversal of 1252957493 is 3947592521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1120776484 + 132181009 = 33478^2 + 11497^2 .

It is an emirp because it is prime and its reverse (3947592521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1252957493 - 2⁶ = 1252957429 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252957403) 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, 626478746 + 626478747.

It is an arithmetic number, because the mean of its divisors is an integer number (626478747).

Almost surely, 2^1252957493 is an apocalyptic number.

It is an amenable number.

1252957493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252957493 is an equidigital number, since it uses as much as digits as its factorization.

1252957493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 680400, while the sum is 47.

The square root of 1252957493 is about 35397.1396160763. The cubic root of 1252957493 is about 1078.0662392765.

The spelling of 1252957493 in words is "one billion, two hundred fifty-two million, nine hundred fifty-seven thousand, four hundred ninety-three".