265251167 has 4 divisors (see below), whose sum is σ = 270255960. Its totient is φ = 260246376.

The previous prime is 265251137. The next prime is 265251169. The reversal of 265251167 is 761152562.

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

It is a cyclic number.

It is not a de Polignac number, because 265251167 - 2¹⁶ = 265185631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265251169) 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, 2502317 + ... + 2502422.

It is an arithmetic number, because the mean of its divisors is an integer number (67563990).

Almost surely, 2^265251167 is an apocalyptic number.

265251167 is a deficient number, since it is larger than the sum of its proper divisors (5004793).

265251167 is an equidigital number, since it uses as much as digits as its factorization.

265251167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5004792.

The product of its digits is 25200, while the sum is 35.

The square root of 265251167 is about 16286.5333020873. The cubic root of 265251167 is about 642.5186937588.

The spelling of 265251167 in words is "two hundred sixty-five million, two hundred fifty-one thousand, one hundred sixty-seven".