64888225 has 12 divisors (see below), whose sum is σ = 83236860. Its totient is φ = 50120000.

The previous prime is 64888223. The next prime is 64888231. The reversal of 64888225 is 52288846.

It can be written as a sum of positive squares in 6 ways, for example, as 3359889 + 61528336 = 1833^2 + 7844^2 .

It is not a de Polignac number, because 64888225 - 2¹ = 64888223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64888223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44026 + ... + 45475.

It is an arithmetic number, because the mean of its divisors is an integer number (6936405).

Almost surely, 2^64888225 is an apocalyptic number.

It is an amenable number.

64888225 is a deficient number, since it is larger than the sum of its proper divisors (18348635).

64888225 is a wasteful number, since it uses less digits than its factorization.

64888225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89540 (or 89535 counting only the distinct ones).

The product of its digits is 245760, while the sum is 43.

The square root of 64888225 is about 8055.3227744144. The cubic root of 64888225 is about 401.8419735635.

The spelling of 64888225 in words is "sixty-four million, eight hundred eighty-eight thousand, two hundred twenty-five".