1252544369 has 2 divisors, whose sum is σ = 1252544370. Its totient is φ = 1252544368.

The previous prime is 1252544333. The next prime is 1252544399. The reversal of 1252544369 is 9634452521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 903303025 + 349241344 = 30055^2 + 18688^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252544369 - 2⁸ = 1252544113 is a prime.

It is a super-2 number, since 2×1252544369² = 3137734792627216322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1252544399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626272184 + 626272185.

It is an arithmetic number, because the mean of its divisors is an integer number (626272185).

Almost surely, 2^1252544369 is an apocalyptic number.

It is an amenable number.

1252544369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252544369 is an equidigital number, since it uses as much as digits as its factorization.

1252544369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 41.

The square root of 1252544369 is about 35391.3035787042. The cubic root of 1252544369 is about 1077.9477399132.

The spelling of 1252544369 in words is "one billion, two hundred fifty-two million, five hundred forty-four thousand, three hundred sixty-nine".