1265422603 has 2 divisors, whose sum is σ = 1265422604. Its totient is φ = 1265422602.

The previous prime is 1265422601. The next prime is 1265422633. The reversal of 1265422603 is 3062245621.

It is a weak prime.

It is an emirp because it is prime and its reverse (3062245621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1265422603 - 2¹ = 1265422601 is a prime.

Together with 1265422601, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1265422601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632711301 + 632711302.

It is an arithmetic number, because the mean of its divisors is an integer number (632711302).

Almost surely, 2^1265422603 is an apocalyptic number.

1265422603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265422603 is an equidigital number, since it uses as much as digits as its factorization.

1265422603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 1265422603 is about 35572.7789608852. The cubic root of 1265422603 is about 1081.6295140173.

The spelling of 1265422603 in words is "one billion, two hundred sixty-five million, four hundred twenty-two thousand, six hundred three".