265552320 has 112 divisors (see below), whose sum is σ = 919813248. Its totient is φ = 64373760.

The previous prime is 265552253. The next prime is 265552321. The reversal of 265552320 is 23255562.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265552321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2014 + ... + 23133.

Almost surely, 2^265552320 is an apocalyptic number.

265552320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265552320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (459906624).

265552320 is an abundant number, since it is smaller than the sum of its proper divisors (654260928).

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

265552320 is a wasteful number, since it uses less digits than its factorization.

265552320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25178 (or 25168 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 265552320 is about 16295.7761398468. The cubic root of 265552320 is about 642.7617630627.

The spelling of 265552320 in words is "two hundred sixty-five million, five hundred fifty-two thousand, three hundred twenty".