265221416 has 16 divisors (see below), whose sum is σ = 501854100. Its totient is φ = 131393664.

The previous prime is 265221391. The next prime is 265221431. The reversal of 265221416 is 614122562.

It can be written as a sum of positive squares in 2 ways, for example, as 260176900 + 5044516 = 16130^2 + 2246^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 151205 + ... + 152948.

Almost surely, 2^265221416 is an apocalyptic number.

It is an amenable number.

265221416 is a deficient number, since it is larger than the sum of its proper divisors (236632684).

265221416 is a wasteful number, since it uses less digits than its factorization.

265221416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304268 (or 304264 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 265221416 is about 16285.6199145135. The cubic root of 265221416 is about 642.4946708819.

Adding to 265221416 its reverse (614122562), we get a palindrome (879343978).

The spelling of 265221416 in words is "two hundred sixty-five million, two hundred twenty-one thousand, four hundred sixteen".