1265466263 has 2 divisors, whose sum is σ = 1265466264. Its totient is φ = 1265466262.

The previous prime is 1265466197. The next prime is 1265466277. The reversal of 1265466263 is 3626645621.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1265466263 - 2¹⁴ = 1265449879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1265466263.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1265466863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632733131 + 632733132.

It is an arithmetic number, because the mean of its divisors is an integer number (632733132).

Almost surely, 2^1265466263 is an apocalyptic number.

1265466263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265466263 is an equidigital number, since it uses as much as digits as its factorization.

1265466263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 41.

The square root of 1265466263 is about 35573.3926270745. The cubic root of 1265466263 is about 1081.6419534457.

The spelling of 1265466263 in words is "one billion, two hundred sixty-five million, four hundred sixty-six thousand, two hundred sixty-three".