265250215 has 4 divisors (see below), whose sum is σ = 318300264. Its totient is φ = 212200168.

The previous prime is 265250207. The next prime is 265250239. The reversal of 265250215 is 512052562.

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 265250215 - 2³ = 265250207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26525017 + ... + 26525026.

It is an arithmetic number, because the mean of its divisors is an integer number (79575066).

Almost surely, 2^265250215 is an apocalyptic number.

265250215 is a deficient number, since it is larger than the sum of its proper divisors (53050049).

265250215 is an equidigital number, since it uses as much as digits as its factorization.

265250215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53050048.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 265250215 is about 16286.5040754608. The cubic root of 265250215 is about 642.5179250804.

The spelling of 265250215 in words is "two hundred sixty-five million, two hundred fifty thousand, two hundred fifteen".