3825209856 has 160 divisors (see below), whose sum is σ = 11453016960. Its totient is φ = 1125679104.

The previous prime is 3825209849. The next prime is 3825209897. The reversal of 3825209856 is 6589025283.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 455100 + ... + 463428.

It is an arithmetic number, because the mean of its divisors is an integer number (71581356).

Almost surely, 2^3825209856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3825209856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5726508480).

3825209856 is an abundant number, since it is smaller than the sum of its proper divisors (7627807104).

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

3825209856 is a wasteful number, since it uses less digits than its factorization.

3825209856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8386 (or 8370 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The square root of 3825209856 is about 61848.2809461993. The cubic root of 3825209856 is about 1563.9340025308.

The spelling of 3825209856 in words is "three billion, eight hundred twenty-five million, two hundred nine thousand, eight hundred fifty-six".