265604480 has 64 divisors (see below), whose sum is σ = 642232800. Its totient is φ = 105025536.

The previous prime is 265604467. The next prime is 265604509. The reversal of 265604480 is 84406562.

265604480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 265604480.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54629 + ... + 59291.

Almost surely, 2^265604480 is an apocalyptic number.

265604480 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 265604480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321116400).

265604480 is an abundant number, since it is smaller than the sum of its proper divisors (376628320).

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

265604480 is an equidigital number, since it uses as much as digits as its factorization.

265604480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4771 (or 4759 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 265604480 is about 16297.3764759853. The cubic root of 265604480 is about 642.8038442349.

The spelling of 265604480 in words is "two hundred sixty-five million, six hundred four thousand, four hundred eighty".