265130161 has 4 divisors (see below), whose sum is σ = 279084400. Its totient is φ = 251175924.

The previous prime is 265130141. The next prime is 265130167. The reversal of 265130161 is 161031562.

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 a de Polignac number, because none of the positive numbers 2^k-265130161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265130167) 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, 6977091 + ... + 6977128.

It is an arithmetic number, because the mean of its divisors is an integer number (69771100).

Almost surely, 2^265130161 is an apocalyptic number.

It is an amenable number.

265130161 is a deficient number, since it is larger than the sum of its proper divisors (13954239).

265130161 is a wasteful number, since it uses less digits than its factorization.

265130161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13954238.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 265130161 is about 16282.8179686441. The cubic root of 265130161 is about 642.4209744993.

The spelling of 265130161 in words is "two hundred sixty-five million, one hundred thirty thousand, one hundred sixty-one".