265505434 has 4 divisors (see below), whose sum is σ = 398258154. Its totient is φ = 132752716.

The previous prime is 265505419. The next prime is 265505441. The reversal of 265505434 is 434505562.

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

It can be written as a sum of positive squares in only one way, i.e., 202350625 + 63154809 = 14225^2 + 7947^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 265505434.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66376357 + ... + 66376360.

Almost surely, 2^265505434 is an apocalyptic number.

265505434 is a deficient number, since it is larger than the sum of its proper divisors (132752720).

265505434 is a wasteful number, since it uses less digits than its factorization.

265505434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132752719.

The product of its (nonzero) digits is 72000, while the sum is 34.

The square root of 265505434 is about 16294.3374826963. The cubic root of 265505434 is about 642.7239320974.

The spelling of 265505434 in words is "two hundred sixty-five million, five hundred five thousand, four hundred thirty-four".