22265520420 has 96 divisors (see below), whose sum is σ = 73242691200. Its totient is φ = 4982492160.

The previous prime is 22265520413. The next prime is 22265520421. The reversal of 22265520420 is 2402556222.

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

It is not an unprimeable number, because it can be changed into a prime (22265520421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1288945 + ... + 1306104.

It is an arithmetic number, because the mean of its divisors is an integer number (762944700).

Almost surely, 2^22265520420 is an apocalyptic number.

22265520420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22265520420 is an abundant number, since it is smaller than the sum of its proper divisors (50977170780).

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

22265520420 is a wasteful number, since it uses less digits than its factorization.

22265520420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595085 (or 2595083 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The spelling of 22265520420 in words is "twenty-two billion, two hundred sixty-five million, five hundred twenty thousand, four hundred twenty".