39520625 has 20 divisors (see below), whose sum is σ = 50749380. Its totient is φ = 30744000.

The previous prime is 39520609. The next prime is 39520633. The reversal of 39520625 is 52602593.

It can be written as a sum of positive squares in 10 ways, for example, as 28344976 + 11175649 = 5324^2 + 3343^2 .

It is not a de Polignac number, because 39520625 - 2⁴ = 39520609 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 39520591 and 39520600.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22271 + ... + 23979.

It is an arithmetic number, because the mean of its divisors is an integer number (2537469).

Almost surely, 2^39520625 is an apocalyptic number.

It is an amenable number.

39520625 is a deficient number, since it is larger than the sum of its proper divisors (11228755).

39520625 is an equidigital number, since it uses as much as digits as its factorization.

39520625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766 (or 1751 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 39520625 is about 6286.5431677513. The cubic root of 39520625 is about 340.6234954904.

The spelling of 39520625 in words is "thirty-nine million, five hundred twenty thousand, six hundred twenty-five".