3825997578 has 112 divisors (see below), whose sum is σ = 9366476616. Its totient is φ = 1164533760.

The previous prime is 3825997507. The next prime is 3825997607. The reversal of 3825997578 is 8757995283.

3825997578 is a `hidden beast` number, since 3 + 8 + 2 + 59 + 9 + 7 + 578 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2333179809 + 1492817769 = 48303^2 + 38637^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1837498 + ... + 1839578.

Almost surely, 2^3825997578 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3825997578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4683238308).

3825997578 is an abundant number, since it is smaller than the sum of its proper divisors (5540479038).

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

3825997578 is a wasteful number, since it uses less digits than its factorization.

3825997578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211 (or 2196 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 63.

The square root of 3825997578 is about 61854.6487986150. The cubic root of 3825997578 is about 1564.0413483333.

The spelling of 3825997578 in words is "three billion, eight hundred twenty-five million, nine hundred ninety-seven thousand, five hundred seventy-eight".