265540434 has 16 divisors (see below), whose sum is σ = 533043840. Its totient is φ = 88186320.

The previous prime is 265540433. The next prime is 265540463. The reversal of 265540434 is 434045562.

It is a junction number, because it is equal to n+sod(n) for n = 265540395 and 265540404.

It is not an unprimeable number, because it can be changed into a prime (265540433) 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 7 ways as a sum of consecutive naturals, for example, 80029 + ... + 83280.

It is an arithmetic number, because the mean of its divisors is an integer number (33315240).

Almost surely, 2^265540434 is an apocalyptic number.

265540434 is an abundant number, since it is smaller than the sum of its proper divisors (267503406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265540434 is a wasteful number, since it uses less digits than its factorization.

265540434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163585.

The product of its (nonzero) digits is 57600, while the sum is 33.

The square root of 265540434 is about 16295.4114400343. The cubic root of 265540434 is about 642.7521730125.

Adding to 265540434 its reverse (434045562), we get a palindrome (699585996).

The spelling of 265540434 in words is "two hundred sixty-five million, five hundred forty thousand, four hundred thirty-four".