265521480 has 64 divisors (see below), whose sum is σ = 910362240. Its totient is φ = 60690432.

The previous prime is 265521461. The next prime is 265521491. The reversal of 265521480 is 84125562.

265521480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157209 + ... + 158888.

It is an arithmetic number, because the mean of its divisors is an integer number (14224410).

Almost surely, 2^265521480 is an apocalyptic number.

265521480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265521480 is an abundant number, since it is smaller than the sum of its proper divisors (644840760).

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

265521480 is a wasteful number, since it uses less digits than its factorization.

265521480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316118 (or 316114 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 265521480 is about 16294.8298548957. The cubic root of 265521480 is about 642.7368796547.

The spelling of 265521480 in words is "two hundred sixty-five million, five hundred twenty-one thousand, four hundred eighty".