1225389341664 has 96 divisors (see below), whose sum is σ = 3617113328640. Its totient is φ = 403541847936.

The previous prime is 1225389341633. The next prime is 1225389341669. The reversal of 1225389341664 is 4661439835221.

It is a happy number.

1225389341664 is a `hidden beast` number, since 1 + 2 + 2 + 538 + 9 + 3 + 41 + 6 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1225389341664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225389341669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8472112 + ... + 8615535.

It is an arithmetic number, because the mean of its divisors is an integer number (37678263840).

Almost surely, 2^{1225389341664} is an apocalyptic number.

It is an amenable number.

1225389341664 is an abundant number, since it is smaller than the sum of its proper divisors (2391723986976).

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

1225389341664 is a wasteful number, since it uses less digits than its factorization.

1225389341664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17087749 (or 17087735 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The spelling of 1225389341664 in words is "one trillion, two hundred twenty-five billion, three hundred eighty-nine million, three hundred forty-one thousand, six hundred sixty-four".