265405063 has 8 divisors (see below), whose sum is σ = 330894720. Its totient is φ = 206809080.

The previous prime is 265405051. The next prime is 265405103. The reversal of 265405063 is 360504562.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 265405063 - 2⁹ = 265404551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265405363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1723333 + ... + 1723486.

It is an arithmetic number, because the mean of its divisors is an integer number (41361840).

Almost surely, 2^265405063 is an apocalyptic number.

265405063 is a deficient number, since it is larger than the sum of its proper divisors (65489657).

265405063 is a wasteful number, since it uses less digits than its factorization.

265405063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3446837.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 265405063 is about 16291.2572565778. The cubic root of 265405063 is about 642.6429306483.

The spelling of 265405063 in words is "two hundred sixty-five million, four hundred five thousand, sixty-three".