265465530 has 144 divisors (see below), whose sum is σ = 799212960. Its totient is φ = 60920640.

The previous prime is 265465513. The next prime is 265465537. The reversal of 265465530 is 35564562.

It is a happy number.

265465530 is a `hidden beast` number, since 2 + 65 + 4 + 65 + 530 = 666.

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 Curzon number.

It is not an unprimeable number, because it can be changed into a prime (265465537) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 206269 + ... + 207551.

It is an arithmetic number, because the mean of its divisors is an integer number (5550090).

Almost surely, 2^265465530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265465530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399606480).

265465530 is an abundant number, since it is smaller than the sum of its proper divisors (533747430).

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

265465530 is a wasteful number, since it uses less digits than its factorization.

265465530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337 (or 1323 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The square root of 265465530 is about 16293.1129622304. The cubic root of 265465530 is about 642.6917311987.

The spelling of 265465530 in words is "two hundred sixty-five million, four hundred sixty-five thousand, five hundred thirty".