265204001 has 4 divisors (see below), whose sum is σ = 266461104. Its totient is φ = 263946900.

The previous prime is 265203979. The next prime is 265204003. The reversal of 265204001 is 100402562.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 265204001 - 2⁶ = 265203937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265204003) 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, 628235 + ... + 628656.

It is an arithmetic number, because the mean of its divisors is an integer number (66615276).

Almost surely, 2^265204001 is an apocalyptic number.

It is an amenable number.

265204001 is a deficient number, since it is larger than the sum of its proper divisors (1257103).

265204001 is a wasteful number, since it uses less digits than its factorization.

265204001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257102.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 265204001 is about 16285.0852315854. The cubic root of 265204001 is about 642.4806080538.

Adding to 265204001 its reverse (100402562), we get a palindrome (365606563).

The spelling of 265204001 in words is "two hundred sixty-five million, two hundred four thousand, one".