39428525 has 24 divisors (see below), whose sum is σ = 52289064. Its totient is φ = 29388800.

The previous prime is 39428489. The next prime is 39428527. The reversal of 39428525 is 52582493.

39428525 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 12 ways, for example, as 21501769 + 17926756 = 4637^2 + 4234^2 .

It is not a de Polignac number, because 39428525 - 2¹⁶ = 39362989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39428527) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 47615 + ... + 48435.

It is an arithmetic number, because the mean of its divisors is an integer number (2178711).

Almost surely, 2^39428525 is an apocalyptic number.

It is an amenable number.

39428525 is a deficient number, since it is larger than the sum of its proper divisors (12860539).

39428525 is a wasteful number, since it uses less digits than its factorization.

39428525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961 (or 956 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 39428525 is about 6279.2137246633. The cubic root of 39428525 is about 340.3586900868.

The spelling of 39428525 in words is "thirty-nine million, four hundred twenty-eight thousand, five hundred twenty-five".