1252733549 has 2 divisors, whose sum is σ = 1252733550. Its totient is φ = 1252733548.

The previous prime is 1252733533. The next prime is 1252733551. The reversal of 1252733549 is 9453372521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 778800649 + 473932900 = 27907^2 + 21770^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252733549 - 2⁴ = 1252733533 is a prime.

Together with 1252733551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1254733549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626366774 + 626366775.

It is an arithmetic number, because the mean of its divisors is an integer number (626366775).

Almost surely, 2^1252733549 is an apocalyptic number.

It is an amenable number.

1252733549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252733549 is an equidigital number, since it uses as much as digits as its factorization.

1252733549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 41.

The square root of 1252733549 is about 35393.9761682691. The cubic root of 1252733549 is about 1078.0020070227.

The spelling of 1252733549 in words is "one billion, two hundred fifty-two million, seven hundred thirty-three thousand, five hundred forty-nine".