1225664103616 has 56 divisors (see below), whose sum is σ = 2575809387360. Its totient is φ = 576657027072.

The previous prime is 1225664103613. The next prime is 1225664103617. The reversal of 1225664103616 is 6163014665221.

It is not an unprimeable number, because it can be changed into a prime (1225664103613) 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 in 7 ways as a sum of consecutive naturals, for example, 4952550 + ... + 5194138.

Almost surely, 2^{1225664103616} is an apocalyptic number.

1225664103616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1225664103616 is an abundant number, since it is smaller than the sum of its proper divisors (1350145283744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225664103616 is a wasteful number, since it uses less digits than its factorization.

1225664103616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246281 (or 246271 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

Adding to 1225664103616 its reverse (6163014665221), we get a palindrome (7388678768837).

The spelling of 1225664103616 in words is "one trillion, two hundred twenty-five billion, six hundred sixty-four million, one hundred three thousand, six hundred sixteen".