138134525 has 12 divisors (see below), whose sum is σ = 171453684. Its totient is φ = 110400000.

The previous prime is 138134519. The next prime is 138134531. The reversal of 138134525 is 525431831.

It is an interprime number because it is at equal distance from previous prime (138134519) and next prime (138134531).

It can be written as a sum of positive squares in 6 ways, for example, as 26853124 + 111281401 = 5182^2 + 10549^2 .

It is not a de Polignac number, because 138134525 - 2⁶ = 138134461 is a prime.

It is a super-2 number, since 2×138134525² = 38162293993951250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138134491 and 138134500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32525 + ... + 36525.

It is an arithmetic number, because the mean of its divisors is an integer number (14287807).

Almost surely, 2^138134525 is an apocalyptic number.

It is an amenable number.

138134525 is a deficient number, since it is larger than the sum of its proper divisors (33319159).

138134525 is a wasteful number, since it uses less digits than its factorization.

138134525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5392 (or 5387 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 138134525 is about 11753.0644939947. The cubic root of 138134525 is about 516.9327880980.

It can be divided in two parts, 1381 and 34525, that multiplied together give a square (47679025 = 6905²).

The spelling of 138134525 in words is "one hundred thirty-eight million, one hundred thirty-four thousand, five hundred twenty-five".