20225555417 has 2 divisors, whose sum is σ = 20225555418. Its totient is φ = 20225555416.

The previous prime is 20225555411. The next prime is 20225555429. The reversal of 20225555417 is 71455552202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11264850496 + 8960704921 = 106136^2 + 94661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20225555417 is a prime.

It is a super-2 number, since 2×20225555417² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20225555411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10112777708 + 10112777709.

It is an arithmetic number, because the mean of its divisors is an integer number (10112777709).

Almost surely, 2^20225555417 is an apocalyptic number.

It is an amenable number.

20225555417 is a deficient number, since it is larger than the sum of its proper divisors (1).

20225555417 is an equidigital number, since it uses as much as digits as its factorization.

20225555417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140000, while the sum is 38.

The spelling of 20225555417 in words is "twenty billion, two hundred twenty-five million, five hundred fifty-five thousand, four hundred seventeen".