64381956325 has 6 divisors (see below), whose sum is σ = 79833625874. Its totient is φ = 51505565040.

The previous prime is 64381956277. The next prime is 64381956337. The reversal of 64381956325 is 52365918346.

It can be written as a sum of positive squares in 3 ways, for example, as 14346529729 + 50035426596 = 119777^2 + 223686^2 .

It is not a de Polignac number, because 64381956325 - 2¹⁷ = 64381825253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1287639102 + ... + 1287639151.

Almost surely, 2^64381956325 is an apocalyptic number.

It is an amenable number.

64381956325 is a deficient number, since it is larger than the sum of its proper divisors (15451669549).

64381956325 is a wasteful number, since it uses less digits than its factorization.

64381956325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575278263 (or 2575278258 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 52.

The spelling of 64381956325 in words is "sixty-four billion, three hundred eighty-one million, nine hundred fifty-six thousand, three hundred twenty-five".