64925805312 has 432 divisors, whose sum is σ = 206211474560. Its totient is φ = 20316635136.

The previous prime is 64925805283. The next prime is 64925805319. The reversal of 64925805312 is 21350852946.

64925805312 is a `hidden beast` number, since 6 + 4 + 9 + 2 + 580 + 53 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is not an unprimeable number, because it can be changed into a prime (64925805319) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 192658008 + ... + 192658344.

Almost surely, 2^64925805312 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 64925805312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103105737280).

64925805312 is an abundant number, since it is smaller than the sum of its proper divisors (141285669248).

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

64925805312 is a wasteful number, since it uses less digits than its factorization.

64925805312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 64925805312 in words is "sixty-four billion, nine hundred twenty-five million, eight hundred five thousand, three hundred twelve".