20225215601 has 2 divisors, whose sum is σ = 20225215602. Its totient is φ = 20225215600.

The previous prime is 20225215541. The next prime is 20225215657. The reversal of 20225215601 is 10651252202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19915983376 + 309232225 = 141124^2 + 17585^2 .

It is a cyclic number.

It is not a de Polignac number, because 20225215601 - 2²⁶ = 20158106737 is a prime.

It is a super-2 number, since 2×20225215601² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20225215001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10112607800 + 10112607801.

It is an arithmetic number, because the mean of its divisors is an integer number (10112607801).

Almost surely, 2^20225215601 is an apocalyptic number.

It is an amenable number.

20225215601 is a deficient number, since it is larger than the sum of its proper divisors (1).

20225215601 is an equidigital number, since it uses as much as digits as its factorization.

20225215601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 20225215601 its reverse (10651252202), we get a palindrome (30876467803).

The spelling of 20225215601 in words is "twenty billion, two hundred twenty-five million, two hundred fifteen thousand, six hundred one".