64525222 has 4 divisors (see below), whose sum is σ = 96787836. Its totient is φ = 32262610.

The previous prime is 64525213. The next prime is 64525231. The reversal of 64525222 is 22252546.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (64525213) and next prime (64525231).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16131304 + ... + 16131307.

It is an arithmetic number, because the mean of its divisors is an integer number (24196959).

Almost surely, 2^64525222 is an apocalyptic number.

64525222 is a deficient number, since it is larger than the sum of its proper divisors (32262614).

64525222 is a wasteful number, since it uses less digits than its factorization.

64525222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32262613.

The product of its digits is 9600, while the sum is 28.

The square root of 64525222 is about 8032.7593017593. The cubic root of 64525222 is about 401.0912328202.

Adding to 64525222 its reverse (22252546), we get a palindrome (86777768).

The spelling of 64525222 in words is "sixty-four million, five hundred twenty-five thousand, two hundred twenty-two".