139025 has 12 divisors (see below), whose sum is σ = 177072. Its totient is φ = 108240.

The previous prime is 139021. The next prime is 139033. The reversal of 139025 is 520931.

It is not a de Polignac number, because 139025 - 2² = 139021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 138988 and 139006.

It is not an unprimeable number, because it can be changed into a prime (139021) 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, 1634 + ... + 1716.

It is an arithmetic number, because the mean of its divisors is an integer number (14756).

2¹³⁹⁰²⁵ is an apocalyptic number.

It is an amenable number.

139025 is a deficient number, since it is larger than the sum of its proper divisors (38047).

139025 is an equidigital number, since it uses as much as digits as its factorization.

139025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 139025 is about 372.8605637500. The cubic root of 139025 is about 51.8041200641.

Adding to 139025 its reverse (520931), we get a palindrome (659956).

The spelling of 139025 in words is "one hundred thirty-nine thousand, twenty-five".