1265222633 has 2 divisors, whose sum is σ = 1265222634. Its totient is φ = 1265222632.

The previous prime is 1265222611. The next prime is 1265222639. The reversal of 1265222633 is 3362225621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1076627344 + 188595289 = 32812^2 + 13733^2 .

It is a cyclic number.

It is not a de Polignac number, because 1265222633 - 2⁸ = 1265222377 is a prime.

It is a super-2 number, since 2×1265222633² = 3201576622110905378, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1265222633.

It is not a weakly prime, because it can be changed into another prime (1265222639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632611316 + 632611317.

It is an arithmetic number, because the mean of its divisors is an integer number (632611317).

Almost surely, 2^1265222633 is an apocalyptic number.

It is an amenable number.

1265222633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265222633 is an equidigital number, since it uses as much as digits as its factorization.

1265222633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 32.

The square root of 1265222633 is about 35569.9681332441. The cubic root of 1265222633 is about 1081.5725357273.

The spelling of 1265222633 in words is "one billion, two hundred sixty-five million, two hundred twenty-two thousand, six hundred thirty-three".