1265423353 has 2 divisors, whose sum is σ = 1265423354. Its totient is φ = 1265423352.

The previous prime is 1265423329. The next prime is 1265423359. The reversal of 1265423353 is 3533245621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1265367184 + 56169 = 35572^2 + 237^2 .

It is a cyclic number.

It is not a de Polignac number, because 1265423353 - 2²¹ = 1263326201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1265423359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632711676 + 632711677.

It is an arithmetic number, because the mean of its divisors is an integer number (632711677).

Almost surely, 2^1265423353 is an apocalyptic number.

It is an amenable number.

1265423353 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265423353 is an equidigital number, since it uses as much as digits as its factorization.

1265423353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 34.

The square root of 1265423353 is about 35572.7895026522. The cubic root of 1265423353 is about 1081.6297277067.

Adding to 1265423353 its reverse (3533245621), we get a palindrome (4798668974).

The spelling of 1265423353 in words is "one billion, two hundred sixty-five million, four hundred twenty-three thousand, three hundred fifty-three".