265153217 has 4 divisors (see below), whose sum is σ = 303032256. Its totient is φ = 227274180.

The previous prime is 265153201. The next prime is 265153219. The reversal of 265153217 is 712351562.

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 not a de Polignac number, because 265153217 - 2⁴ = 265153201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265153219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18939509 + ... + 18939522.

It is an arithmetic number, because the mean of its divisors is an integer number (75758064).

Almost surely, 2^265153217 is an apocalyptic number.

It is an amenable number.

265153217 is a deficient number, since it is larger than the sum of its proper divisors (37879039).

265153217 is an equidigital number, since it uses as much as digits as its factorization.

265153217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37879038.

The product of its digits is 12600, while the sum is 32.

The square root of 265153217 is about 16283.5259388131. The cubic root of 265153217 is about 642.4395958293.

The spelling of 265153217 in words is "two hundred sixty-five million, one hundred fifty-three thousand, two hundred seventeen".