135524225 has 6 divisors (see below), whose sum is σ = 168050070. Its totient is φ = 108419360.

The previous prime is 135524209. The next prime is 135524251. The reversal of 135524225 is 522425531.

It can be written as a sum of positive squares in 3 ways, for example, as 34058896 + 101465329 = 5836^2 + 10073^2 .

It is not a de Polignac number, because 135524225 - 2⁴ = 135524209 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 2710460 + ... + 2710509.

It is an arithmetic number, because the mean of its divisors is an integer number (28008345).

Almost surely, 2^135524225 is an apocalyptic number.

It is an amenable number.

135524225 is a deficient number, since it is larger than the sum of its proper divisors (32525845).

135524225 is an equidigital number, since it uses as much as digits as its factorization.

135524225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5420979 (or 5420974 counting only the distinct ones).

The product of its digits is 12000, while the sum is 29.

The square root of 135524225 is about 11641.4872331674. The cubic root of 135524225 is about 513.6559353637.

Adding to 135524225 its reverse (522425531), we get a palindrome (657949756).

The spelling of 135524225 in words is "one hundred thirty-five million, five hundred twenty-four thousand, two hundred twenty-five".