265613530 has 64 divisors (see below), whose sum is σ = 592639488. Its totient is φ = 83462400.

The previous prime is 265613449. The next prime is 265613533. The reversal of 265613530 is 35316562.

It is a junction number, because it is equal to n+sod(n) for n = 265613492 and 265613501.

It is not an unprimeable number, because it can be changed into a prime (265613533) 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, 136444 + ... + 138376.

It is an arithmetic number, because the mean of its divisors is an integer number (9259992).

Almost surely, 2^265613530 is an apocalyptic number.

265613530 is an abundant number, since it is smaller than the sum of its proper divisors (327025958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265613530 is a wasteful number, since it uses less digits than its factorization.

265613530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 265613530 is about 16297.6541256710. The cubic root of 265613530 is about 642.8111449510.

The spelling of 265613530 in words is "two hundred sixty-five million, six hundred thirteen thousand, five hundred thirty".