1265061047 has 2 divisors, whose sum is σ = 1265061048. Its totient is φ = 1265061046.

The previous prime is 1265061013. The next prime is 1265061079. The reversal of 1265061047 is 7401605621.

It is an a-pointer prime, because the next prime (1265061079) can be obtained adding 1265061047 to its sum of digits (32).

It is a strong prime.

It is an emirp because it is prime and its reverse (7401605621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1265061047 - 2²⁰ = 1264012471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1265061947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632530523 + 632530524.

It is an arithmetic number, because the mean of its divisors is an integer number (632530524).

Almost surely, 2^1265061047 is an apocalyptic number.

1265061047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265061047 is an equidigital number, since it uses as much as digits as its factorization.

1265061047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 1265061047 is about 35567.6966783063. The cubic root of 1265061047 is about 1081.5264899654.

Adding to 1265061047 its reverse (7401605621), we get a palindrome (8666666668).

The spelling of 1265061047 in words is "one billion, two hundred sixty-five million, sixty-one thousand, forty-seven".