64316777425 has 6 divisors (see below), whose sum is σ = 79752804038. Its totient is φ = 51453421920.

The previous prime is 64316777423. The next prime is 64316777429. The reversal of 64316777425 is 52477761346.

It can be written as a sum of positive squares in 3 ways, for example, as 265266369 + 64051511056 = 16287^2 + 253084^2 .

It is not a de Polignac number, because 64316777425 - 2¹ = 64316777423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64316777423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1286335524 + ... + 1286335573.

Almost surely, 2^64316777425 is an apocalyptic number.

It is an amenable number.

64316777425 is a deficient number, since it is larger than the sum of its proper divisors (15436026613).

64316777425 is a wasteful number, since it uses less digits than its factorization.

64316777425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2572671107 (or 2572671102 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 52.

The spelling of 64316777425 in words is "sixty-four billion, three hundred sixteen million, seven hundred seventy-seven thousand, four hundred twenty-five".