1563280734625 has 16 divisors (see below), whose sum is σ = 1952721151056. Its totient is φ = 1249504848000.

The previous prime is 1563280734571. The next prime is 1563280734629. The reversal of 1563280734625 is 5264370823651.

It can be written as a sum of positive squares in 8 ways, for example, as 1420349102656 + 142931631969 = 1191784^2 + 378063^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1563280734625 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1563280734629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5458516 + ... + 5737765.

It is an arithmetic number, because the mean of its divisors is an integer number (122045071941).

Almost surely, 2^{1563280734625} is an apocalyptic number.

It is an amenable number.

1563280734625 is a deficient number, since it is larger than the sum of its proper divisors (389440416431).

1563280734625 is a wasteful number, since it uses less digits than its factorization.

1563280734625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11197413 (or 11197403 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 52.

The spelling of 1563280734625 in words is "one trillion, five hundred sixty-three billion, two hundred eighty million, seven hundred thirty-four thousand, six hundred twenty-five".