138086725 has 12 divisors (see below), whose sum is σ = 195688864. Its totient is φ = 94687920.

The previous prime is 138086659. The next prime is 138086747. The reversal of 138086725 is 527680831.

It is not a de Polignac number, because 138086725 - 2¹³ = 138078533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 394359 + ... + 394708.

Almost surely, 2^138086725 is an apocalyptic number.

It is an amenable number.

138086725 is a deficient number, since it is larger than the sum of its proper divisors (57602139).

138086725 is an equidigital number, since it uses as much as digits as its factorization.

138086725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789084 (or 789079 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 138086725 is about 11751.0308058485. The cubic root of 138086725 is about 516.8731548336.

The spelling of 138086725 in words is "one hundred thirty-eight million, eighty-six thousand, seven hundred twenty-five".