139435825 has 12 divisors (see below), whose sum is σ = 173060848. Its totient is φ = 111445200.

The previous prime is 139435823. The next prime is 139435841. The reversal of 139435825 is 528534931.

It is not a de Polignac number, because 139435825 - 2¹ = 139435823 is a prime.

It is a Duffinian number.

Its product of digits (129600) is a multiple of the sum of its prime factors (5184).

It is not an unprimeable number, because it can be changed into a prime (139435823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36454 + ... + 40096.

Almost surely, 2^139435825 is an apocalyptic number.

It is an amenable number.

139435825 is a deficient number, since it is larger than the sum of its proper divisors (33625023).

139435825 is a wasteful number, since it uses less digits than its factorization.

139435825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5184 (or 5179 counting only the distinct ones).

The product of its digits is 129600, while the sum is 40.

The square root of 139435825 is about 11808.2947541125. The cubic root of 139435825 is about 518.5509770230.

The spelling of 139435825 in words is "one hundred thirty-nine million, four hundred thirty-five thousand, eight hundred twenty-five".