2040135325 has 6 divisors (see below), whose sum is σ = 2529767834. Its totient is φ = 1632108240.

The previous prime is 2040135323. The next prime is 2040135373. The reversal of 2040135325 is 5235310402.

It can be written as a sum of positive squares in 3 ways, for example, as 36409156 + 2003726169 = 6034^2 + 44763^2 .

It is not a de Polignac number, because 2040135325 - 2¹ = 2040135323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 81605413 = 2040135325 / (2 + 0 + 4 + 0 + 1 + 3 + 5 + 3 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2040135325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040135323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40802682 + ... + 40802731.

Almost surely, 2^2040135325 is an apocalyptic number.

2040135325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2040135325 is a deficient number, since it is larger than the sum of its proper divisors (489632509).

2040135325 is an equidigital number, since it uses as much as digits as its factorization.

2040135325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81605423 (or 81605418 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 2040135325 is about 45167.8572106315. The cubic root of 2040135325 is about 1268.2931842445.

Adding to 2040135325 its reverse (5235310402), we get a palindrome (7275445727).

The spelling of 2040135325 in words is "two billion, forty million, one hundred thirty-five thousand, three hundred twenty-five".