139594225 has 27 divisors (see below), whose sum is σ = 185210337. Its totient is φ = 104350080.

The previous prime is 139594207. The next prime is 139594241. The reversal of 139594225 is 522495931.

The square root of 139594225 is 11815.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3265249 + 136328976 = 1807^2 + 11676^2 .

It is not a de Polignac number, because 139594225 - 2¹³ = 139586033 is a prime.

It is a Duffinian 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 26 ways as a sum of consecutive naturals, for example, 1004206 + ... + 1004344.

Almost surely, 2^139594225 is an apocalyptic number.

139594225 is the 11815-th square number.

139594225 is the 5908-th centered octagonal number.

It is an amenable number.

139594225 is a deficient number, since it is larger than the sum of its proper divisors (45616112).

139594225 is an equidigital number, since it uses as much as digits as its factorization.

139594225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322 (or 161 counting only the distinct ones).

The product of its digits is 97200, while the sum is 40.

The cubic root of 139594225 is about 518.7472618039.

The spelling of 139594225 in words is "one hundred thirty-nine million, five hundred ninety-four thousand, two hundred twenty-five".