265120015 has 32 divisors (see below), whose sum is σ = 357073920. Its totient is φ = 187789824.

The previous prime is 265119991. The next prime is 265120019. The reversal of 265120015 is 510021562.

It is a cyclic number.

It is not a de Polignac number, because 265120015 - 2⁷ = 265119887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265120019) 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 31 ways as a sum of consecutive naturals, for example, 269214 + ... + 270196.

It is an arithmetic number, because the mean of its divisors is an integer number (11158560).

Almost surely, 2^265120015 is an apocalyptic number.

265120015 is a deficient number, since it is larger than the sum of its proper divisors (91953905).

265120015 is a wasteful number, since it uses less digits than its factorization.

265120015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 265120015 is about 16282.5064102551. The cubic root of 265120015 is about 642.4127796736.

Adding to 265120015 its reverse (510021562), we get a palindrome (775141577).

The spelling of 265120015 in words is "two hundred sixty-five million, one hundred twenty thousand, fifteen".