1253535205 has 16 divisors (see below), whose sum is σ = 1715246064. Its totient is φ = 871234560.

The previous prime is 1253535197. The next prime is 1253535253. The reversal of 1253535205 is 5025353521.

It can be written as a sum of positive squares in 8 ways, for example, as 83484769 + 1170050436 = 9137^2 + 34206^2 .

It is not a de Polignac number, because 1253535205 - 2³ = 1253535197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 566106 + ... + 568315.

It is an arithmetic number, because the mean of its divisors is an integer number (107202879).

Almost surely, 2^1253535205 is an apocalyptic number.

It is an amenable number.

1253535205 is a deficient number, since it is larger than the sum of its proper divisors (461710859).

1253535205 is a wasteful number, since it uses less digits than its factorization.

1253535205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134456.

The product of its (nonzero) digits is 22500, while the sum is 31.

The square root of 1253535205 is about 35405.2991090317. The cubic root of 1253535205 is about 1078.2319049407.

Adding to 1253535205 its reverse (5025353521), we get a palindrome (6278888726).

The spelling of 1253535205 in words is "one billion, two hundred fifty-three million, five hundred thirty-five thousand, two hundred five".