138425065 has 4 divisors (see below), whose sum is σ = 166110084. Its totient is φ = 110740048.

The previous prime is 138425059. The next prime is 138425087. The reversal of 138425065 is 560524831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41126569 + 97298496 = 6413^2 + 9864^2 .

It is a cyclic number.

It is not a de Polignac number, because 138425065 - 2⁹ = 138424553 is a prime.

It is a super-2 number, since 2×138425065² = 38322997240508450, which contains 22 as substring.

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 138425065.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13842502 + ... + 13842511.

It is an arithmetic number, because the mean of its divisors is an integer number (41527521).

Almost surely, 2^138425065 is an apocalyptic number.

It is an amenable number.

138425065 is a deficient number, since it is larger than the sum of its proper divisors (27685019).

138425065 is an equidigital number, since it uses as much as digits as its factorization.

138425065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27685018.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 138425065 is about 11765.4181821132. The cubic root of 138425065 is about 517.2949579382.

Adding to 138425065 its reverse (560524831), we get a palindrome (698949896).

The spelling of 138425065 in words is "one hundred thirty-eight million, four hundred twenty-five thousand, sixty-five".