1563761125 has 16 divisors (see below), whose sum is σ = 1952801136. Its totient is φ = 1250222400.

The previous prime is 1563761063. The next prime is 1563761209. The reversal of 1563761125 is 5211673651.

It can be written as a sum of positive squares in 8 ways, for example, as 16990884 + 1546770241 = 4122^2 + 39329^2 .

It is not a de Polignac number, because 1563761125 - 2¹¹ = 1563759077 is a prime.

It is a super-2 number, since 2×1563761125² = 4890697712122531250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 273799 + ... + 279451.

It is an arithmetic number, because the mean of its divisors is an integer number (122050071).

Almost surely, 2^1563761125 is an apocalyptic number.

It is an amenable number.

1563761125 is a deficient number, since it is larger than the sum of its proper divisors (389040011).

1563761125 is an equidigital number, since it uses as much as digits as its factorization.

1563761125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7881 (or 7871 counting only the distinct ones).

The product of its digits is 37800, while the sum is 37.

The square root of 1563761125 is about 39544.4196442431. The cubic root of 1563761125 is about 1160.7093177133.

The spelling of 1563761125 in words is "one billion, five hundred sixty-three million, seven hundred sixty-one thousand, one hundred twenty-five".