64115825 has 6 divisors (see below), whose sum is σ = 79503654. Its totient is φ = 51292640.

The previous prime is 64115803. The next prime is 64115879. The reversal of 64115825 is 52851146.

64115825 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 3 ways, for example, as 1373584 + 62742241 = 1172^2 + 7921^2 .

It is not a de Polignac number, because 64115825 - 2⁶ = 64115761 is a prime.

It is a super-2 number, since 2×64115825² = 8221678030861250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64115791 and 64115800.

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 5 ways as a sum of consecutive naturals, for example, 1282292 + ... + 1282341.

It is an arithmetic number, because the mean of its divisors is an integer number (13250609).

Almost surely, 2^64115825 is an apocalyptic number.

It is an amenable number.

64115825 is a deficient number, since it is larger than the sum of its proper divisors (15387829).

64115825 is a wasteful number, since it uses less digits than its factorization.

64115825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564643 (or 2564638 counting only the distinct ones).

The product of its digits is 9600, while the sum is 32.

The square root of 64115825 is about 8007.2357902088. The cubic root of 64115825 is about 400.2411566628.

The spelling of 64115825 in words is "sixty-four million, one hundred fifteen thousand, eight hundred twenty-five".