138025 has 6 divisors (see below), whose sum is σ = 171182. Its totient is φ = 110400.

The previous prime is 138007. The next prime is 138041. The reversal of 138025 is 520831.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2601 + 135424 = 51^2 + 368^2 .

It is not a de Polignac number, because 138025 - 2⁵ = 137993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 137993 and 138011.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2736 + ... + 2785.

2¹³⁸⁰²⁵ is an apocalyptic number.

It is an amenable number.

138025 is a deficient number, since it is larger than the sum of its proper divisors (33157).

138025 is an equidigital number, since it uses as much as digits as its factorization.

138025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5531 (or 5526 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 138025 is about 371.5171597652. The cubic root of 138025 is about 51.6796128964.

Adding to 138025 its reverse (520831), we get a palindrome (658856).

The spelling of 138025 in words is "one hundred thirty-eight thousand, twenty-five".