39686464325 has 12 divisors (see below), whose sum is σ = 49230600900. Its totient is φ = 31736664960.

The previous prime is 39686464273. The next prime is 39686464369. The reversal of 39686464325 is 52346468693.

It can be written as a sum of positive squares in 6 ways, for example, as 8597369284 + 31089095041 = 92722^2 + 176321^2 .

It is not a de Polignac number, because 39686464325 - 2⁶ = 39686464261 is a prime.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 247664 + ... + 375113.

It is an arithmetic number, because the mean of its divisors is an integer number (4102550075).

Almost surely, 2^39686464325 is an apocalyptic number.

It is an amenable number.

39686464325 is a deficient number, since it is larger than the sum of its proper divisors (9544136575).

39686464325 is a wasteful number, since it uses less digits than its factorization.

39686464325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625336 (or 625331 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 56.

The spelling of 39686464325 in words is "thirty-nine billion, six hundred eighty-six million, four hundred sixty-four thousand, three hundred twenty-five".