139825 has 24 divisors (see below), whose sum is σ = 214272. Its totient is φ = 88320.

The previous prime is 139813. The next prime is 139831. The reversal of 139825 is 528931.

It is not a de Polignac number, because 139825 - 2⁷ = 139697 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139793 and 139802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2952 + ... + 2998.

It is an arithmetic number, because the mean of its divisors is an integer number (8928).

2¹³⁹⁸²⁵ is an apocalyptic number.

It is an amenable number.

139825 is a deficient number, since it is larger than the sum of its proper divisors (74447).

139825 is a wasteful number, since it uses less digits than its factorization.

139825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 76 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 139825 is about 373.9318119658. The cubic root of 139825 is about 51.9032966054.

The spelling of 139825 in words is "one hundred thirty-nine thousand, eight hundred twenty-five".