1563826425 has 72 divisors (see below), whose sum is σ = 3025556352. Its totient is φ = 710640000.

The previous prime is 1563826417. The next prime is 1563826471. The reversal of 1563826425 is 5246283651.

It is not a de Polignac number, because 1563826425 - 2³ = 1563826417 is a prime.

It is a Curzon 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 71 ways as a sum of consecutive naturals, for example, 664000 + ... + 666350.

It is an arithmetic number, because the mean of its divisors is an integer number (42021616).

Almost surely, 2^1563826425 is an apocalyptic number.

1563826425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1563826425 is a deficient number, since it is larger than the sum of its proper divisors (1461729927).

1563826425 is a wasteful number, since it uses less digits than its factorization.

1563826425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2559 (or 2547 counting only the distinct ones).

The product of its digits is 345600, while the sum is 42.

The square root of 1563826425 is about 39545.2452894150. The cubic root of 1563826425 is about 1160.7254739029.

The spelling of 1563826425 in words is "one billion, five hundred sixty-three million, eight hundred twenty-six thousand, four hundred twenty-five".