64225231 has 6 divisors (see below), whose sum is σ = 74711040. Its totient is φ = 55050156.

The previous prime is 64225219. The next prime is 64225243. The reversal of 64225231 is 13252246.

It is an interprime number because it is at equal distance from previous prime (64225219) and next prime (64225243).

It is not a de Polignac number, because 64225231 - 2⁵ = 64225199 is a prime.

It is a super-2 number, since 2×64225231² = 8249760594006722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64225196 and 64225205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64255231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 655311 + ... + 655408.

It is an arithmetic number, because the mean of its divisors is an integer number (12451840).

Almost surely, 2^64225231 is an apocalyptic number.

64225231 is a deficient number, since it is larger than the sum of its proper divisors (10485809).

64225231 is a wasteful number, since it uses less digits than its factorization.

64225231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310733 (or 1310726 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 64225231 is about 8014.0645742345. The cubic root of 64225231 is about 400.4686818788.

Adding to 64225231 its reverse (13252246), we get a palindrome (77477477).

The spelling of 64225231 in words is "sixty-four million, two hundred twenty-five thousand, two hundred thirty-one".