265020533220 has 48 divisors (see below), whose sum is σ = 743193984960. Its totient is φ = 70563904896.

The previous prime is 265020533201. The next prime is 265020533273. The reversal of 265020533220 is 22335020562.

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

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, 3342910 + ... + 3421269.

It is an arithmetic number, because the mean of its divisors is an integer number (15483208020).

Almost surely, 2^265020533220 is an apocalyptic number.

265020533220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265020533220 is an abundant number, since it is smaller than the sum of its proper divisors (478173451740).

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

265020533220 is a wasteful number, since it uses less digits than its factorization.

265020533220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6764844 (or 6764842 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 265020533220 its reverse (22335020562), we get a palindrome (287355553782).

The spelling of 265020533220 in words is "two hundred sixty-five billion, twenty million, five hundred thirty-three thousand, two hundred twenty".