265940033 has 4 divisors (see below), whose sum is σ = 266066388. Its totient is φ = 265813680.

The previous prime is 265940023. The next prime is 265940039. The reversal of 265940033 is 330049562.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 184633744 + 81306289 = 13588^2 + 9017^2 .

It is a cyclic number.

It is not a de Polignac number, because 265940033 - 2¹² = 265935937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265940039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59966 + ... + 64247.

It is an arithmetic number, because the mean of its divisors is an integer number (66516597).

Almost surely, 2^265940033 is an apocalyptic number.

It is an amenable number.

265940033 is a deficient number, since it is larger than the sum of its proper divisors (126355).

265940033 is a wasteful number, since it uses less digits than its factorization.

265940033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126354.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 265940033 is about 16307.6679203374. The cubic root of 265940033 is about 643.0744270064.

Adding to 265940033 its reverse (330049562), we get a palindrome (595989595).

The spelling of 265940033 in words is "two hundred sixty-five million, nine hundred forty thousand, thirty-three".