265820416 has 27 divisors (see below), whose sum is σ = 531123691. Its totient is φ = 132779776.

The previous prime is 265820389. The next prime is 265820417. The reversal of 265820416 is 614028562.

The square root of 265820416 is 16304.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265820417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 260355 + ... + 261373.

Almost surely, 2^265820416 is an apocalyptic number.

265820416 is the 16304-th square number.

It is an amenable number.

265820416 is a deficient number, since it is larger than the sum of its proper divisors (265303275).

265820416 is an frugal number, since it uses more digits than its factorization.

265820416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054 (or 1021 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The cubic root of 265820416 is about 642.9779965333.

Adding to 265820416 its reverse (614028562), we get a palindrome (879848978).

The spelling of 265820416 in words is "two hundred sixty-five million, eight hundred twenty thousand, four hundred sixteen".