1265411071 has 2 divisors, whose sum is σ = 1265411072. Its totient is φ = 1265411070.

The previous prime is 1265411029. The next prime is 1265411101. The reversal of 1265411071 is 1701145621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1265411071 - 2¹¹ = 1265409023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1265411471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632705535 + 632705536.

It is an arithmetic number, because the mean of its divisors is an integer number (632705536).

Almost surely, 2^1265411071 is an apocalyptic number.

1265411071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265411071 is an equidigital number, since it uses as much as digits as its factorization.

1265411071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 1265411071 is about 35572.6168702838. The cubic root of 1265411071 is about 1081.6262283194.

Adding to 1265411071 its reverse (1701145621), we get a palindrome (2966556692).

The spelling of 1265411071 in words is "one billion, two hundred sixty-five million, four hundred eleven thousand, seventy-one".