64545525000 has 384 divisors, whose sum is σ = 244503100800. Its totient is φ = 15645600000.

The previous prime is 64545524987. The next prime is 64545525001. The reversal of 64545525000 is 52554546.

64545525000 is a `hidden beast` number, since 6 + 4 + 54 + 552 + 50 + 0 + 0 = 666.

It is a super-2 number, since 2×64545525000² (a number of 22 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (64545525001) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7420654 + ... + 7429346.

It is an arithmetic number, because the mean of its divisors is an integer number (636726825).

Almost surely, 2^64545525000 is an apocalyptic number.

64545525000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64545525000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122251550400).

64545525000 is an abundant number, since it is smaller than the sum of its proper divisors (179957575800).

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

64545525000 is a wasteful number, since it uses less digits than its factorization.

64545525000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8744 (or 8714 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 64545525000 in words is "sixty-four billion, five hundred forty-five million, five hundred twenty-five thousand".