1265552216 has 16 divisors (see below), whose sum is σ = 2512493640. Its totient is φ = 595553920.

The previous prime is 1265552203. The next prime is 1265552227. The reversal of 1265552216 is 6122555621.

It is a super-2 number, since 2×1265552216² = 3203244822845021312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 4652630 + ... + 4652901.

Almost surely, 2^1265552216 is an apocalyptic number.

It is an amenable number.

1265552216 is a deficient number, since it is larger than the sum of its proper divisors (1246941424).

1265552216 is a wasteful number, since it uses less digits than its factorization.

1265552216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9305554 (or 9305550 counting only the distinct ones).

The product of its digits is 36000, while the sum is 35.

The square root of 1265552216 is about 35574.6007145548. The cubic root of 1265552216 is about 1081.6664419863. Note that the first 3 decimals are identical.

The spelling of 1265552216 in words is "one billion, two hundred sixty-five million, five hundred fifty-two thousand, two hundred sixteen".