64816325 has 24 divisors (see below), whose sum is σ = 97261632. Its totient is φ = 41829120.

The previous prime is 64816313. The next prime is 64816327. The reversal of 64816325 is 52361846.

64816325 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 64816325 - 2⁴ = 64816309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64816327) 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 23 ways as a sum of consecutive naturals, for example, 7919 + ... + 13868.

It is an arithmetic number, because the mean of its divisors is an integer number (4052568).

Almost surely, 2^64816325 is an apocalyptic number.

It is an amenable number.

64816325 is a deficient number, since it is larger than the sum of its proper divisors (32445307).

64816325 is a wasteful number, since it uses less digits than its factorization.

64816325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21821 (or 21816 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 64816325 is about 8050.8586498584. The cubic root of 64816325 is about 401.6934971336.

The spelling of 64816325 in words is "sixty-four million, eight hundred sixteen thousand, three hundred twenty-five".