252449709289 has 2 divisors, whose sum is σ = 252449709290. Its totient is φ = 252449709288.

The previous prime is 252449709287. The next prime is 252449709293. The reversal of 252449709289 is 982907944252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152677747600 + 99771961689 = 390740^2 + 315867^2 .

It is a cyclic number.

It is not a de Polignac number, because 252449709289 - 2¹ = 252449709287 is a prime.

It is a super-2 number, since 2×252449709289² (a number of 24 digits) contains 22 as substring.

Together with 252449709287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (252449709287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126224854644 + 126224854645.

It is an arithmetic number, because the mean of its divisors is an integer number (126224854645).

Almost surely, 2^252449709289 is an apocalyptic number.

It is an amenable number.

252449709289 is a deficient number, since it is larger than the sum of its proper divisors (1).

252449709289 is an equidigital number, since it uses as much as digits as its factorization.

252449709289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 252449709289 in words is "two hundred fifty-two billion, four hundred forty-nine million, seven hundred nine thousand, two hundred eighty-nine".