11265257220 has 72 divisors (see below), whose sum is σ = 36055785024. Its totient is φ = 2574418752.

The previous prime is 11265257209. The next prime is 11265257233. The reversal of 11265257220 is 2275256211.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2172591 + ... + 2177769.

It is an arithmetic number, because the mean of its divisors is an integer number (500774792).

Almost surely, 2^11265257220 is an apocalyptic number.

11265257220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11265257220 is an abundant number, since it is smaller than the sum of its proper divisors (24790527804).

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

11265257220 is an frugal number, since it uses more digits than its factorization.

11265257220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10377 (or 5196 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The spelling of 11265257220 in words is "eleven billion, two hundred sixty-five million, two hundred fifty-seven thousand, two hundred twenty".