138032025 has 24 divisors (see below), whose sum is σ = 236086080. Its totient is φ = 71077440.

The previous prime is 138032009. The next prime is 138032077. The reversal of 138032025 is 520230831.

It is not a de Polignac number, because 138032025 - 2⁴ = 138032009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138031986 and 138032004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29557 + ... + 33906.

It is an arithmetic number, because the mean of its divisors is an integer number (9836920).

Almost surely, 2^138032025 is an apocalyptic number.

138032025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138032025 is a deficient number, since it is larger than the sum of its proper divisors (98054055).

138032025 is a wasteful number, since it uses less digits than its factorization.

138032025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63505 (or 63500 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 138032025 is about 11748.7031199192. The cubic root of 138032025 is about 516.8048965328.

Adding to 138032025 its reverse (520230831), we get a palindrome (658262856).

The spelling of 138032025 in words is "one hundred thirty-eight million, thirty-two thousand, twenty-five".