64308225 has 24 divisors (see below), whose sum is σ = 109992960. Its totient is φ = 33113920.

The previous prime is 64308203. The next prime is 64308241. The reversal of 64308225 is 52280346.

It is not a de Polignac number, because 64308225 - 2⁹ = 64307713 is a prime.

It is a super-3 number, since 3×64308225³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64308192 and 64308201.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12609 + ... + 16958.

It is an arithmetic number, because the mean of its divisors is an integer number (4583040).

Almost surely, 2^64308225 is an apocalyptic number.

It is an amenable number.

64308225 is a deficient number, since it is larger than the sum of its proper divisors (45684735).

64308225 is a wasteful number, since it uses less digits than its factorization.

64308225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29609 (or 29604 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 64308225 is about 8019.2409241773. The cubic root of 64308225 is about 400.6411073212.

The spelling of 64308225 in words is "sixty-four million, three hundred eight thousand, two hundred twenty-five".