39806648425 has 12 divisors (see below), whose sum is σ = 49797063900. Its totient is φ = 31563499520.

The previous prime is 39806648419. The next prime is 39806648477. The reversal of 39806648425 is 52484660893.

It can be written as a sum of positive squares in 6 ways, for example, as 14781939561 + 25024708864 = 121581^2 + 158192^2 .

It is not a de Polignac number, because 39806648425 - 2⁵ = 39806648393 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7042600 + ... + 7048249.

It is an arithmetic number, because the mean of its divisors is an integer number (4149755325).

Almost surely, 2^39806648425 is an apocalyptic number.

It is an amenable number.

39806648425 is a deficient number, since it is larger than the sum of its proper divisors (9990415475).

39806648425 is a wasteful number, since it uses less digits than its factorization.

39806648425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14090972 (or 14090967 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 55.

The spelling of 39806648425 in words is "thirty-nine billion, eight hundred six million, six hundred forty-eight thousand, four hundred twenty-five".