1563893325 has 144 divisors (see below), whose sum is σ = 3241667520. Its totient is φ = 742763520.

The previous prime is 1563893251. The next prime is 1563893333. The reversal of 1563893325 is 5233983651.

It is a happy number.

1563893325 is a `hidden beast` number, since 1 + 5 + 638 + 9 + 3 + 3 + 2 + 5 = 666.

It is not a de Polignac number, because 1563893325 - 2⁷ = 1563893197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1961827 + ... + 1962623.

It is an arithmetic number, because the mean of its divisors is an integer number (22511580).

Almost surely, 2^1563893325 is an apocalyptic number.

1563893325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1563893325 is an abundant number, since it is smaller than the sum of its proper divisors (1677774195).

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

1563893325 is a wasteful number, since it uses less digits than its factorization.

1563893325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858 (or 841 counting only the distinct ones).

The product of its digits is 583200, while the sum is 45.

The square root of 1563893325 is about 39546.0911469136. The cubic root of 1563893325 is about 1160.7420254898.

The spelling of 1563893325 in words is "one billion, five hundred sixty-three million, eight hundred ninety-three thousand, three hundred twenty-five".