65325297408 has 288 divisors, whose sum is σ = 202194703872. Its totient is φ = 18338611200.

The previous prime is 65325297397. The next prime is 65325297437. The reversal of 65325297408 is 80479252356.

It is a happy number.

65325297408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125384188 + ... + 125384708.

It is an arithmetic number, because the mean of its divisors is an integer number (702064944).

Almost surely, 2^65325297408 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 65325297408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101097351936).

65325297408 is an abundant number, since it is smaller than the sum of its proper divisors (136869406464).

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

65325297408 is a wasteful number, since it uses less digits than its factorization.

65325297408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911 (or 897 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 51.

The spelling of 65325297408 in words is "sixty-five billion, three hundred twenty-five million, two hundred ninety-seven thousand, four hundred eight".