64802125 has 8 divisors (see below), whose sum is σ = 80873208. Its totient is φ = 51841600.

The previous prime is 64802123. The next prime is 64802159. The reversal of 64802125 is 52120846.

It can be written as a sum of positive squares in 4 ways, for example, as 64009 + 64738116 = 253^2 + 8046^2 .

It is not a de Polignac number, because 64802125 - 2¹ = 64802123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64802093 and 64802102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64802123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259084 + ... + 259333.

It is an arithmetic number, because the mean of its divisors is an integer number (10109151).

Almost surely, 2^64802125 is an apocalyptic number.

It is an amenable number.

64802125 is a deficient number, since it is larger than the sum of its proper divisors (16071083).

64802125 is an equidigital number, since it uses as much as digits as its factorization.

64802125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518432 (or 518422 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 64802125 is about 8049.9767080408. The cubic root of 64802125 is about 401.6641605724.

The spelling of 64802125 in words is "sixty-four million, eight hundred two thousand, one hundred twenty-five".