64373406425 has 12 divisors (see below), whose sum is σ = 79928493996. Its totient is φ = 51430680000.

The previous prime is 64373406421. The next prime is 64373406431. The reversal of 64373406425 is 52460437346.

It can be written as a sum of positive squares in 6 ways, for example, as 2950227856 + 61423178569 = 54316^2 + 247837^2 .

It is not a de Polignac number, because 64373406425 - 2² = 64373406421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64373406421) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1681826 + ... + 1719675.

It is an arithmetic number, because the mean of its divisors is an integer number (6660707833).

Almost surely, 2^64373406425 is an apocalyptic number.

It is an amenable number.

64373406425 is a deficient number, since it is larger than the sum of its proper divisors (15555087571).

64373406425 is a wasteful number, since it uses less digits than its factorization.

64373406425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3402268 (or 3402263 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 44.

The spelling of 64373406425 in words is "sixty-four billion, three hundred seventy-three million, four hundred six thousand, four hundred twenty-five".