64471225 has 48 divisors (see below), whose sum is σ = 104243328. Its totient is φ = 38384640.

The previous prime is 64471223. The next prime is 64471271. The reversal of 64471225 is 52217446.

It is not a de Polignac number, because 64471225 - 2¹ = 64471223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64471223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37842 + ... + 39508.

It is an arithmetic number, because the mean of its divisors is an integer number (2171736).

Almost surely, 2^64471225 is an apocalyptic number.

64471225 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64471225 is a deficient number, since it is larger than the sum of its proper divisors (39772103).

64471225 is a wasteful number, since it uses less digits than its factorization.

64471225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714 (or 1709 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

The square root of 64471225 is about 8029.3975490070. The cubic root of 64471225 is about 400.9793191284.

The spelling of 64471225 in words is "sixty-four million, four hundred seventy-one thousand, two hundred twenty-five".