139369925 has 12 divisors (see below), whose sum is σ = 172968096. Its totient is φ = 111399600.

The previous prime is 139369889. The next prime is 139369973. The reversal of 139369925 is 529963931.

139369925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139369925 - 2⁸ = 139369669 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139369925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46832 + ... + 49718.

It is an arithmetic number, because the mean of its divisors is an integer number (14414008).

Almost surely, 2^139369925 is an apocalyptic number.

It is an amenable number.

139369925 is a deficient number, since it is larger than the sum of its proper divisors (33598171).

139369925 is a wasteful number, since it uses less digits than its factorization.

139369925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4828 (or 4823 counting only the distinct ones).

The product of its digits is 393660, while the sum is 47.

The square root of 139369925 is about 11805.5040129594. The cubic root of 139369925 is about 518.4692718267.

The spelling of 139369925 in words is "one hundred thirty-nine million, three hundred sixty-nine thousand, nine hundred twenty-five".