139006525 has 24 divisors (see below), whose sum is σ = 197737344. Its totient is φ = 94958400.

The previous prime is 139006507. The next prime is 139006531. The reversal of 139006525 is 525600931.

It is not a de Polignac number, because 139006525 - 2⁵ = 139006493 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 23 ways as a sum of consecutive naturals, for example, 49920 + ... + 52630.

It is an arithmetic number, because the mean of its divisors is an integer number (8239056).

Almost surely, 2^139006525 is an apocalyptic number.

It is an amenable number.

139006525 is a deficient number, since it is larger than the sum of its proper divisors (58730819).

139006525 is a wasteful number, since it uses less digits than its factorization.

139006525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3021 (or 3016 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 139006525 is about 11790.1028409425. The cubic root of 139006525 is about 518.0182521657.

The spelling of 139006525 in words is "one hundred thirty-nine million, six thousand, five hundred twenty-five".