64680125 has 16 divisors (see below), whose sum is σ = 81936192. Its totient is φ = 50965200.

The previous prime is 64680103. The next prime is 64680149. The reversal of 64680125 is 52108646.

64680125 = 379² + 380² + ... + 628².

It is not a de Polignac number, because 64680125 - 2⁶ = 64680061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64680091 and 64680100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4514 + ... + 12236.

It is an arithmetic number, because the mean of its divisors is an integer number (5121012).

Almost surely, 2^64680125 is an apocalyptic number.

It is an amenable number.

64680125 is a deficient number, since it is larger than the sum of its proper divisors (17256067).

64680125 is an equidigital number, since it uses as much as digits as its factorization.

64680125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7805 (or 7795 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 64680125 is about 8042.3954764734. The cubic root of 64680125 is about 401.4119373018.

The spelling of 64680125 in words is "sixty-four million, six hundred eighty thousand, one hundred twenty-five".