265253505 has 16 divisors (see below), whose sum is σ = 462988224. Its totient is φ = 128607680.

The previous prime is 265253501. The next prime is 265253519. The reversal of 265253505 is 505352562.

It is not a de Polignac number, because 265253505 - 2² = 265253501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (265253501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 803634 + ... + 803963.

It is an arithmetic number, because the mean of its divisors is an integer number (28936764).

Almost surely, 2^265253505 is an apocalyptic number.

It is an amenable number.

265253505 is a deficient number, since it is larger than the sum of its proper divisors (197734719).

265253505 is a wasteful number, since it uses less digits than its factorization.

265253505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607616.

The product of its (nonzero) digits is 45000, while the sum is 33.

The square root of 265253505 is about 16286.6050790212. The cubic root of 265253505 is about 642.5205815347.

The spelling of 265253505 in words is "two hundred sixty-five million, two hundred fifty-three thousand, five hundred five".