64252222 has 4 divisors (see below), whose sum is σ = 96378336. Its totient is φ = 32126110.

The previous prime is 64252219. The next prime is 64252241. The reversal of 64252222 is 22225246.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22225246 = 2 ⋅11112623.

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, 16063054 + ... + 16063057.

It is an arithmetic number, because the mean of its divisors is an integer number (24094584).

Almost surely, 2^64252222 is an apocalyptic number.

64252222 is a deficient number, since it is larger than the sum of its proper divisors (32126114).

64252222 is a wasteful number, since it uses less digits than its factorization.

64252222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32126113.

The product of its digits is 3840, while the sum is 25.

The square root of 64252222 is about 8015.7483742942. The cubic root of 64252222 is about 400.5247737303.

Adding to 64252222 its reverse (22225246), we get a palindrome (86477468).

The spelling of 64252222 in words is "sixty-four million, two hundred fifty-two thousand, two hundred twenty-two".