22521425016 has 32 divisors (see below), whose sum is σ = 58751544960. Its totient is φ = 7180744032.

The previous prime is 22521424997. The next prime is 22521425023. The reversal of 22521425016 is 61052412522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20399290 + ... + 20400393.

It is an arithmetic number, because the mean of its divisors is an integer number (1835985780).

Almost surely, 2^22521425016 is an apocalyptic number.

It is an amenable number.

22521425016 is an abundant number, since it is smaller than the sum of its proper divisors (36230119944).

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

22521425016 is a wasteful number, since it uses less digits than its factorization.

22521425016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40799715 (or 40799711 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 22521425016 its reverse (61052412522), we get a palindrome (83573837538).

The spelling of 22521425016 in words is "twenty-two billion, five hundred twenty-one million, four hundred twenty-five thousand, sixteen".