265240791 has 16 divisors (see below), whose sum is σ = 393277920. Its totient is φ = 176679360.

The previous prime is 265240751. The next prime is 265240793. The reversal of 265240791 is 197042562.

It is not a de Polignac number, because 265240791 - 2⁷ = 265240663 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265240793) 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 15 ways as a sum of consecutive naturals, for example, 35851 + ... + 42611.

It is an arithmetic number, because the mean of its divisors is an integer number (24579870).

Almost surely, 2^265240791 is an apocalyptic number.

265240791 is a deficient number, since it is larger than the sum of its proper divisors (128037129).

265240791 is a wasteful number, since it uses less digits than its factorization.

265240791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8223 (or 8217 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 265240791 is about 16286.2147535884. The cubic root of 265240791 is about 642.5103157110.

The spelling of 265240791 in words is "two hundred sixty-five million, two hundred forty thousand, seven hundred ninety-one".