265638325 has 6 divisors (see below), whose sum is σ = 329391554. Its totient is φ = 212510640.

The previous prime is 265638323. The next prime is 265638337. The reversal of 265638325 is 523836562.

It can be written as a sum of positive squares in 3 ways, for example, as 14922769 + 250715556 = 3863^2 + 15834^2 .

It is not a de Polignac number, because 265638325 - 2¹ = 265638323 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265638323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5312742 + ... + 5312791.

Almost surely, 2^265638325 is an apocalyptic number.

265638325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

265638325 is a deficient number, since it is larger than the sum of its proper divisors (63753229).

265638325 is a wasteful number, since it uses less digits than its factorization.

265638325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10625543 (or 10625538 counting only the distinct ones).

The product of its digits is 259200, while the sum is 40.

The square root of 265638325 is about 16298.4148002191. The cubic root of 265638325 is about 642.8311464502.

The spelling of 265638325 in words is "two hundred sixty-five million, six hundred thirty-eight thousand, three hundred twenty-five".