21552225452 has 12 divisors (see below), whose sum is σ = 39016960080. Its totient is φ = 10404522576.

The previous prime is 21552225437. The next prime is 21552225491. The reversal of 21552225452 is 25452225512.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92897408 + ... + 92897639.

It is an arithmetic number, because the mean of its divisors is an integer number (3251413340).

Almost surely, 2^21552225452 is an apocalyptic number.

It is an amenable number.

21552225452 is a deficient number, since it is larger than the sum of its proper divisors (17464734628).

21552225452 is a wasteful number, since it uses less digits than its factorization.

21552225452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185795080 (or 185795078 counting only the distinct ones).

The product of its digits is 80000, while the sum is 35.

The spelling of 21552225452 in words is "twenty-one billion, five hundred fifty-two million, two hundred twenty-five thousand, four hundred fifty-two".