64574460225 has 288 divisors, whose sum is σ = 136553760000. Its totient is φ = 29857766400.

The previous prime is 64574460199. The next prime is 64574460227. The reversal of 64574460225 is 52206447546.

It is not a de Polignac number, because 64574460225 - 2⁶ = 64574460161 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 (64574460227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 324494676 + ... + 324494874.

It is an arithmetic number, because the mean of its divisors is an integer number (474145000).

Almost surely, 2^64574460225 is an apocalyptic number.

It is an amenable number.

64574460225 is an abundant number, since it is smaller than the sum of its proper divisors (71979299775).

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

64574460225 is a wasteful number, since it uses less digits than its factorization.

64574460225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 45.

The spelling of 64574460225 in words is "sixty-four billion, five hundred seventy-four million, four hundred sixty thousand, two hundred twenty-five".