22520531401 has 2 divisors, whose sum is σ = 22520531402. Its totient is φ = 22520531400.

The previous prime is 22520531389. The next prime is 22520531447. The reversal of 22520531401 is 10413502522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13251463225 + 9269068176 = 115115^2 + 96276^2 .

It is a cyclic number.

It is not a de Polignac number, because 22520531401 - 2⁷ = 22520531273 is a prime.

It is not a weakly prime, because it can be changed into another prime (22520531471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11260265700 + 11260265701.

It is an arithmetic number, because the mean of its divisors is an integer number (11260265701).

Almost surely, 2^22520531401 is an apocalyptic number.

It is an amenable number.

22520531401 is a deficient number, since it is larger than the sum of its proper divisors (1).

22520531401 is an equidigital number, since it uses as much as digits as its factorization.

22520531401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 22520531401 in words is "twenty-two billion, five hundred twenty million, five hundred thirty-one thousand, four hundred one".