39850625 has 10 divisors (see below), whose sum is σ = 49798122. Its totient is φ = 31880000.

The previous prime is 39850571. The next prime is 39850633. The reversal of 39850625 is 52605893.

It can be written as a sum of positive squares in 5 ways, for example, as 10679824 + 29170801 = 3268^2 + 5401^2 .

It is not a de Polignac number, because 39850625 - 2²² = 35656321 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 (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31256 + ... + 32505.

Almost surely, 2^39850625 is an apocalyptic number.

It is an amenable number.

39850625 is a deficient number, since it is larger than the sum of its proper divisors (9947497).

39850625 is an frugal number, since it uses more digits than its factorization.

39850625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63781 (or 63766 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 39850625 is about 6312.7351441352. The cubic root of 39850625 is about 341.5689455478.

The spelling of 39850625 in words is "thirty-nine million, eight hundred fifty thousand, six hundred twenty-five".