64227515625 has 336 divisors, whose sum is σ = 149623084800. Its totient is φ = 26989200000.

The previous prime is 64227515609. The next prime is 64227515629. The reversal of 64227515625 is 52651572246.

64227515625 is a `hidden beast` number, since 6 + 4 + 2 + 2 + 7 + 5 + 15 + 625 = 666.

64227515625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64227515625 - 2⁴ = 64227515609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (64227515629) by changing a digit.

It is a polite number, since it can be written in 335 ways as a sum of consecutive naturals, for example, 268734256 + ... + 268734494.

It is an arithmetic number, because the mean of its divisors is an integer number (445306800).

Almost surely, 2^64227515625 is an apocalyptic number.

64227515625 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64227515625 is an abundant number, since it is smaller than the sum of its proper divisors (85395569175).

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

64227515625 is an equidigital number, since it uses as much as digits as its factorization.

64227515625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 267 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The spelling of 64227515625 in words is "sixty-four billion, two hundred twenty-seven million, five hundred fifteen thousand, six hundred twenty-five".