20525222345224 has 8 divisors (see below), whose sum is σ = 38484791897310. Its totient is φ = 10262611172608.

The previous prime is 20525222345207. The next prime is 20525222345267. The reversal of 20525222345224 is 42254322252502.

It can be written as a sum of positive squares in only one way, i.e., 19847185380324 + 678036964900 = 4455018^2 + 823430^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20525222345224² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282826396569 + ... + 1282826396584.

Almost surely, 2^{20525222345224} is an apocalyptic number.

It is an amenable number.

20525222345224 is a deficient number, since it is larger than the sum of its proper divisors (17959569552086).

20525222345224 is a wasteful number, since it uses less digits than its factorization.

20525222345224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2565652793159 (or 2565652793155 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 40.

Adding to 20525222345224 its reverse (42254322252502), we get a palindrome (62779544597726).

The spelling of 20525222345224 in words is "twenty trillion, five hundred twenty-five billion, two hundred twenty-two million, three hundred forty-five thousand, two hundred twenty-four".