20525795922897 has 48 divisors (see below), whose sum is σ = 31123977201408. Its totient is φ = 13515922964880.

The previous prime is 20525795922871. The next prime is 20525795922911. The reversal of 20525795922897 is 79822959752502.

It is a happy number.

20525795922897 is a `hidden beast` number, since 2 + 0 + 5 + 2 + 5 + 7 + 9 + 592 + 28 + 9 + 7 = 666.

It is not a de Polignac number, because 20525795922897 - 2¹⁸ = 20525795660753 is a prime.

It is a super-3 number, since 3×20525795922897³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20525795922857) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 90304122 + ... + 90531132.

It is an arithmetic number, because the mean of its divisors is an integer number (648416191696).

Almost surely, 2^{20525795922897} is an apocalyptic number.

20525795922897 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20525795922897 is a deficient number, since it is larger than the sum of its proper divisors (10598181278511).

20525795922897 is an equidigital number, since it uses as much as digits as its factorization.

20525795922897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231592 (or 231580 counting only the distinct ones).

The product of its (nonzero) digits is 571536000, while the sum is 72.

The spelling of 20525795922897 in words is "twenty trillion, five hundred twenty-five billion, seven hundred ninety-five million, nine hundred twenty-two thousand, eight hundred ninety-seven".