64275625 has 10 divisors (see below), whose sum is σ = 80319602. Its totient is φ = 51420000.

The previous prime is 64275611. The next prime is 64275641. The reversal of 64275625 is 52657246.

64275625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 7529536 + 56746089 = 2744^2 + 7533^2 .

It is a de Polignac number, because none of the positive numbers 2^k-64275625 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 50796 + ... + 52045.

Almost surely, 2^64275625 is an apocalyptic number.

It is an amenable number.

64275625 is a deficient number, since it is larger than the sum of its proper divisors (16043977).

64275625 is an equidigital number, since it uses as much as digits as its factorization.

64275625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102861 (or 102846 counting only the distinct ones).

The product of its digits is 100800, while the sum is 37.

The square root of 64275625 is about 8017.2080551773. The cubic root of 64275625 is about 400.5733963987.

It can be divided in two parts, 642 and 75625, that added together give a palindrome (76267).

The spelling of 64275625 in words is "sixty-four million, two hundred seventy-five thousand, six hundred twenty-five".