6409025208 has 160 divisors (see below), whose sum is σ = 18523890000. Its totient is φ = 2068968960.

The previous prime is 6409025153. The next prime is 6409025209. The reversal of 6409025208 is 8025209046.

It is a happy number.

6409025208 is a `hidden beast` number, since 6 + 40 + 90 + 2 + 520 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6409025209) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3957823 + ... + 3959441.

Almost surely, 2^6409025208 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 6409025208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9261945000).

6409025208 is an abundant number, since it is smaller than the sum of its proper divisors (12114864792).

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

6409025208 is a wasteful number, since it uses less digits than its factorization.

6409025208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827 (or 1814 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 6409025208 is about 80056.3876776863. The cubic root of 6409025208 is about 1857.5078590396.

It can be divided in two parts, 64090 and 25208, that added together give a palindrome (89298).

The spelling of 6409025208 in words is "six billion, four hundred nine million, twenty-five thousand, two hundred eight".