135839225 has 6 divisors (see below), whose sum is σ = 168440670. Its totient is φ = 108671360.

The previous prime is 135839213. The next prime is 135839239. The reversal of 135839225 is 522938531.

It can be written as a sum of positive squares in 3 ways, for example, as 10936249 + 124902976 = 3307^2 + 11176^2 .

It is not a de Polignac number, because 135839225 - 2¹⁶ = 135773689 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2716760 + ... + 2716809.

It is an arithmetic number, because the mean of its divisors is an integer number (28073445).

Almost surely, 2^135839225 is an apocalyptic number.

It is an amenable number.

135839225 is a deficient number, since it is larger than the sum of its proper divisors (32601445).

135839225 is an equidigital number, since it uses as much as digits as its factorization.

135839225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5433579 (or 5433574 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 135839225 is about 11655.0085800054. The cubic root of 135839225 is about 514.0535922459.

The spelling of 135839225 in words is "one hundred thirty-five million, eight hundred thirty-nine thousand, two hundred twenty-five".