22254003520 has 56 divisors (see below), whose sum is σ = 60562687104. Its totient is φ = 7629943296.

The previous prime is 22254003491. The next prime is 22254003523. The reversal of 22254003520 is 2530045222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22254003523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4965172 + ... + 4969651.

Almost surely, 2^22254003520 is an apocalyptic number.

22254003520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22254003520 is an abundant number, since it is smaller than the sum of its proper divisors (38308683584).

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

22254003520 is an equidigital number, since it uses as much as digits as its factorization.

22254003520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9934847 (or 9934837 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

Adding to 22254003520 its reverse (2530045222), we get a palindrome (24784048742).

The spelling of 22254003520 in words is "twenty-two billion, two hundred fifty-four million, three thousand, five hundred twenty".