1226252662564 has 12 divisors (see below), whose sum is σ = 2146071916044. Its totient is φ = 613089257984.

The previous prime is 1226252662553. The next prime is 1226252662573. The reversal of 1226252662564 is 4652662526221.

It can be written as a sum of positive squares in 2 ways, for example, as 794340822564 + 431911840000 = 891258^2 + 657200^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9193837 + ... + 9326260.

It is an arithmetic number, because the mean of its divisors is an integer number (178839326337).

Almost surely, 2^{1226252662564} is an apocalyptic number.

It is an amenable number.

1226252662564 is a deficient number, since it is larger than the sum of its proper divisors (919819253480).

1226252662564 is a wasteful number, since it uses less digits than its factorization.

1226252662564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18536654 (or 18536652 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 49.

The spelling of 1226252662564 in words is "one trillion, two hundred twenty-six billion, two hundred fifty-two million, six hundred sixty-two thousand, five hundred sixty-four".