64225128 has 64 divisors (see below), whose sum is σ = 177822720. Its totient is φ = 19166400.

The previous prime is 64225121. The next prime is 64225129. The reversal of 64225128 is 82152246.

It is a junction number, because it is equal to n+sod(n) for n = 64225095 and 64225104.

It is not an unprimeable number, because it can be changed into a prime (64225121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15873 + ... + 19503.

It is an arithmetic number, because the mean of its divisors is an integer number (2778480).

Almost surely, 2^64225128 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 64225128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88911360).

64225128 is an abundant number, since it is smaller than the sum of its proper divisors (113597592).

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

64225128 is a wasteful number, since it uses less digits than its factorization.

64225128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3718 (or 3714 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 64225128 is about 8014.0581480296. The cubic root of 64225128 is about 400.4684677973.

The spelling of 64225128 in words is "sixty-four million, two hundred twenty-five thousand, one hundred twenty-eight".