20525111351 has 2 divisors, whose sum is σ = 20525111352. Its totient is φ = 20525111350.

The previous prime is 20525111293. The next prime is 20525111363. The reversal of 20525111351 is 15311152502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20525111351 - 2⁶ = 20525111287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20525111351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20525113351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10262555675 + 10262555676.

It is an arithmetic number, because the mean of its divisors is an integer number (10262555676).

Almost surely, 2^20525111351 is an apocalyptic number.

20525111351 is a deficient number, since it is larger than the sum of its proper divisors (1).

20525111351 is an equidigital number, since it uses as much as digits as its factorization.

20525111351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 26.

Adding to 20525111351 its reverse (15311152502), we get a palindrome (35836263853).

The spelling of 20525111351 in words is "twenty billion, five hundred twenty-five million, one hundred eleven thousand, three hundred fifty-one".