265135830 has 16 divisors (see below), whose sum is σ = 636326064. Its totient is φ = 70702880.

The previous prime is 265135811. The next prime is 265135837. The reversal of 265135830 is 38531562.

It is a junction number, because it is equal to n+sod(n) for n = 265135791 and 265135800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265135837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4418901 + ... + 4418960.

It is an arithmetic number, because the mean of its divisors is an integer number (39770379).

Almost surely, 2^265135830 is an apocalyptic number.

265135830 is an abundant number, since it is smaller than the sum of its proper divisors (371190234).

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

265135830 is a wasteful number, since it uses less digits than its factorization.

265135830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8837871.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 265135830 is about 16282.9920469182. The cubic root of 265135830 is about 642.4255532045.

The spelling of 265135830 in words is "two hundred sixty-five million, one hundred thirty-five thousand, eight hundred thirty".