265223613 has 16 divisors (see below), whose sum is σ = 383144256. Its totient is φ = 162543360.

The previous prime is 265223611. The next prime is 265223617. The reversal of 265223613 is 316322562.

It is not a de Polignac number, because 265223613 - 2¹ = 265223611 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265223611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58278 + ... + 62663.

It is an arithmetic number, because the mean of its divisors is an integer number (23946516).

Almost surely, 2^265223613 is an apocalyptic number.

It is an amenable number.

265223613 is a deficient number, since it is larger than the sum of its proper divisors (117920643).

265223613 is a wasteful number, since it uses less digits than its factorization.

265223613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121004.

The product of its digits is 12960, while the sum is 30.

The square root of 265223613 is about 16285.6873665191. The cubic root of 265223613 is about 642.4964449429.

It can be divided in two parts, 26522 and 3613, that added together give a triangular number (30135 = T₂₄₅).

The spelling of 265223613 in words is "two hundred sixty-five million, two hundred twenty-three thousand, six hundred thirteen".