20225253587797 has 2 divisors, whose sum is σ = 20225253587798. Its totient is φ = 20225253587796.

The previous prime is 20225253587783. The next prime is 20225253587867. The reversal of 20225253587797 is 79778535252202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18549267016996 + 1675986570801 = 4306886^2 + 1294599^2 .

It is a cyclic number.

It is not a de Polignac number, because 20225253587797 - 2³⁵ = 20190893849429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20225253587717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10112626793898 + 10112626793899.

It is an arithmetic number, because the mean of its divisors is an integer number (10112626793899).

Almost surely, 2^{20225253587797} is an apocalyptic number.

It is an amenable number.

20225253587797 is a deficient number, since it is larger than the sum of its proper divisors (1).

20225253587797 is an equidigital number, since it uses as much as digits as its factorization.

20225253587797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176000, while the sum is 64.

The spelling of 20225253587797 in words is "twenty trillion, two hundred twenty-five billion, two hundred fifty-three million, five hundred eighty-seven thousand, seven hundred ninety-seven".