64306625 has 8 divisors (see below), whose sum is σ = 80254824. Its totient is φ = 51445200.

The previous prime is 64306609. The next prime is 64306639. The reversal of 64306625 is 52660346.

It can be written as a sum of positive squares in 4 ways, for example, as 322624 + 63984001 = 568^2 + 7999^2 .

It is not a de Polignac number, because 64306625 - 2⁴ = 64306609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64306591 and 64306600.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257102 + ... + 257351.

It is an arithmetic number, because the mean of its divisors is an integer number (10031853).

Almost surely, 2^64306625 is an apocalyptic number.

It is an amenable number.

64306625 is a deficient number, since it is larger than the sum of its proper divisors (15948199).

64306625 is an equidigital number, since it uses as much as digits as its factorization.

64306625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514468 (or 514458 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 64306625 is about 8019.1411634913. The cubic root of 64306625 is about 400.6377846198.

The spelling of 64306625 in words is "sixty-four million, three hundred six thousand, six hundred twenty-five".