1563944960325 has 24 divisors (see below), whose sum is σ = 2820788002656. Its totient is φ = 758276344000.

The previous prime is 1563944960323. The next prime is 1563944960339. The reversal of 1563944960325 is 5230694493651.

It is not a de Polignac number, because 1563944960325 - 2¹ = 1563944960323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1563944960321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 947844606 + ... + 947846255.

It is an arithmetic number, because the mean of its divisors is an integer number (117532833444).

Almost surely, 2^{1563944960325} is an apocalyptic number.

1563944960325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1563944960325 is a deficient number, since it is larger than the sum of its proper divisors (1256843042331).

1563944960325 is a wasteful number, since it uses less digits than its factorization.

1563944960325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895690885 (or 1895690880 counting only the distinct ones).

The product of its (nonzero) digits is 20995200, while the sum is 57.

The spelling of 1563944960325 in words is "one trillion, five hundred sixty-three billion, nine hundred forty-four million, nine hundred sixty thousand, three hundred twenty-five".