265138266 has 16 divisors (see below), whose sum is σ = 530515584. Its totient is φ = 88339584.

The previous prime is 265138259. The next prime is 265138283. The reversal of 265138266 is 662831562.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6570 + ... + 23946.

It is an arithmetic number, because the mean of its divisors is an integer number (33157224).

Almost surely, 2^265138266 is an apocalyptic number.

265138266 is an abundant number, since it is smaller than the sum of its proper divisors (265377318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265138266 is a wasteful number, since it uses less digits than its factorization.

265138266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19925.

The product of its digits is 103680, while the sum is 39.

The square root of 265138266 is about 16283.0668487236. The cubic root of 265138266 is about 642.4275206789.

The spelling of 265138266 in words is "two hundred sixty-five million, one hundred thirty-eight thousand, two hundred sixty-six".