20525243351 has 2 divisors, whose sum is σ = 20525243352. Its totient is φ = 20525243350.

The previous prime is 20525243329. The next prime is 20525243371. The reversal of 20525243351 is 15334252502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20525243351 is a prime.

It is a super-2 number, since 2×20525243351² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20525243311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10262621675 + 10262621676.

It is an arithmetic number, because the mean of its divisors is an integer number (10262621676).

Almost surely, 2^20525243351 is an apocalyptic number.

20525243351 is a deficient number, since it is larger than the sum of its proper divisors (1).

20525243351 is an equidigital number, since it uses as much as digits as its factorization.

20525243351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 20525243351 its reverse (15334252502), we get a palindrome (35859495853).

The spelling of 20525243351 in words is "twenty billion, five hundred twenty-five million, two hundred forty-three thousand, three hundred fifty-one".