139925 has 12 divisors (see below), whose sum is σ = 180420. Its totient is φ = 107520.

The previous prime is 139921. The next prime is 139939. The reversal of 139925 is 529931.

It can be written as a sum of positive squares in 6 ways, for example, as 9604 + 130321 = 98^2 + 361^2 .

It is not a de Polignac number, because 139925 - 2² = 139921 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139925.

It is not an unprimeable number, because it can be changed into a prime (139921) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 629 + ... + 821.

It is an arithmetic number, because the mean of its divisors is an integer number (15035).

2¹³⁹⁹²⁵ is an apocalyptic number.

It is an amenable number.

139925 is a deficient number, since it is larger than the sum of its proper divisors (40495).

139925 is a wasteful number, since it uses less digits than its factorization.

139925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 227 counting only the distinct ones).

The product of its digits is 2430, while the sum is 29.

The square root of 139925 is about 374.0655022854. The cubic root of 139925 is about 51.9156670514.

The spelling of 139925 in words is "one hundred thirty-nine thousand, nine hundred twenty-five".