22505515601 has 2 divisors, whose sum is σ = 22505515602. Its totient is φ = 22505515600.

The previous prime is 22505515583. The next prime is 22505515609. The reversal of 22505515601 is 10651550522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18296620225 + 4208895376 = 135265^2 + 64876^2 .

It is a cyclic number.

It is not a de Polignac number, because 22505515601 - 2¹⁴ = 22505499217 is a prime.

It is not a weakly prime, because it can be changed into another prime (22505515609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11252757800 + 11252757801.

It is an arithmetic number, because the mean of its divisors is an integer number (11252757801).

Almost surely, 2^22505515601 is an apocalyptic number.

It is an amenable number.

22505515601 is a deficient number, since it is larger than the sum of its proper divisors (1).

22505515601 is an equidigital number, since it uses as much as digits as its factorization.

22505515601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15000, while the sum is 32.

The spelling of 22505515601 in words is "twenty-two billion, five hundred five million, five hundred fifteen thousand, six hundred one".