1252293761 has 2 divisors, whose sum is σ = 1252293762. Its totient is φ = 1252293760.

The previous prime is 1252293677. The next prime is 1252293769. The reversal of 1252293761 is 1673922521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1046199025 + 206094736 = 32345^2 + 14356^2 .

It is an emirp because it is prime and its reverse (1673922521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1252293761 - 2¹⁰ = 1252292737 is a prime.

It is not a weakly prime, because it can be changed into another prime (1252293769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626146880 + 626146881.

It is an arithmetic number, because the mean of its divisors is an integer number (626146881).

Almost surely, 2^1252293761 is an apocalyptic number.

It is an amenable number.

1252293761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252293761 is an equidigital number, since it uses as much as digits as its factorization.

1252293761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 1252293761 is about 35387.7628708004. The cubic root of 1252293761 is about 1077.8758434991.

The spelling of 1252293761 in words is "one billion, two hundred fifty-two million, two hundred ninety-three thousand, seven hundred sixty-one".