42525535306451 has 2 divisors, whose sum is σ = 42525535306452. Its totient is φ = 42525535306450.

The previous prime is 42525535306447. The next prime is 42525535306489. The reversal of 42525535306451 is 15460353552524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42525535306451 - 2² = 42525535306447 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42525535306451.

It is not a weakly prime, because it can be changed into another prime (42525535506451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21262767653225 + 21262767653226.

It is an arithmetic number, because the mean of its divisors is an integer number (21262767653226).

Almost surely, 2^{42525535306451} is an apocalyptic number.

42525535306451 is a deficient number, since it is larger than the sum of its proper divisors (1).

42525535306451 is an equidigital number, since it uses as much as digits as its factorization.

42525535306451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800000, while the sum is 50.

Adding to 42525535306451 its reverse (15460353552524), we get a palindrome (57985888858975).

The spelling of 42525535306451 in words is "forty-two trillion, five hundred twenty-five billion, five hundred thirty-five million, three hundred six thousand, four hundred fifty-one".