64389456325 has 6 divisors (see below), whose sum is σ = 79842925874. Its totient is φ = 51511565040.

The previous prime is 64389456319. The next prime is 64389456403. The reversal of 64389456325 is 52365498346.

It can be written as a sum of positive squares in 3 ways, for example, as 12493427076 + 51896029249 = 111774^2 + 227807^2 .

It is not a de Polignac number, because 64389456325 - 2²³ = 64381067717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1287789102 + ... + 1287789151.

Almost surely, 2^64389456325 is an apocalyptic number.

It is an amenable number.

64389456325 is a deficient number, since it is larger than the sum of its proper divisors (15453469549).

64389456325 is a wasteful number, since it uses less digits than its factorization.

64389456325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575578263 (or 2575578258 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 55.

The spelling of 64389456325 in words is "sixty-four billion, three hundred eighty-nine million, four hundred fifty-six thousand, three hundred twenty-five".