265256465 has 8 divisors (see below), whose sum is σ = 325710528. Its totient is φ = 207270000.

The previous prime is 265256461. The next prime is 265256471. The reversal of 265256465 is 564652562.

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

It is not a de Polignac number, because 265256465 - 2² = 265256461 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265256461) 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, 616661 + ... + 617090.

It is an arithmetic number, because the mean of its divisors is an integer number (40713816).

Almost surely, 2^265256465 is an apocalyptic number.

It is an amenable number.

265256465 is a deficient number, since it is larger than the sum of its proper divisors (60454063).

265256465 is a wasteful number, since it uses less digits than its factorization.

265256465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233799.

The product of its digits is 432000, while the sum is 41.

The square root of 265256465 is about 16286.6959509902. The cubic root of 265256465 is about 642.5229715174.

The spelling of 265256465 in words is "two hundred sixty-five million, two hundred fifty-six thousand, four hundred sixty-five".