265310257 has 4 divisors (see below), whose sum is σ = 265351680. Its totient is φ = 265268836.

The previous prime is 265310237. The next prime is 265310261. The reversal of 265310257 is 752013562.

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 not a de Polignac number, because 265310257 - 2¹¹ = 265308209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265310237) 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, 8833 + ... + 24670.

It is an arithmetic number, because the mean of its divisors is an integer number (66337920).

Almost surely, 2^265310257 is an apocalyptic number.

It is an amenable number.

265310257 is a deficient number, since it is larger than the sum of its proper divisors (41423).

265310257 is an equidigital number, since it uses as much as digits as its factorization.

265310257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41422.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 265310257 is about 16288.3472765041. The cubic root of 265310257 is about 642.5664015108.

The spelling of 265310257 in words is "two hundred sixty-five million, three hundred ten thousand, two hundred fifty-seven".