39670625 has 10 divisors (see below), whose sum is σ = 49573194. Its totient is φ = 31736000.

The previous prime is 39670619. The next prime is 39670643. The reversal of 39670625 is 52607693.

39670625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 21077281 + 18593344 = 4591^2 + 4312^2 .

It is not a de Polignac number, because 39670625 - 2⁸ = 39670369 is a prime.

It is a Duffinian number.

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 9 ways as a sum of consecutive naturals, for example, 31112 + ... + 32361.

Almost surely, 2^39670625 is an apocalyptic number.

It is an amenable number.

39670625 is a deficient number, since it is larger than the sum of its proper divisors (9902569).

39670625 is an frugal number, since it uses more digits than its factorization.

39670625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63493 (or 63478 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 39670625 is about 6298.4621138815. The cubic root of 39670625 is about 341.0538953865.

The spelling of 39670625 in words is "thirty-nine million, six hundred seventy thousand, six hundred twenty-five".