42525122117 has 2 divisors, whose sum is σ = 42525122118. Its totient is φ = 42525122116.

The previous prime is 42525122083. The next prime is 42525122153. The reversal of 42525122117 is 71122152524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29063089441 + 13462032676 = 170479^2 + 116026^2 .

It is a cyclic number.

It is not a de Polignac number, because 42525122117 - 2⁸ = 42525121861 is a prime.

It is a super-2 number, since 2×42525122117² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42525122177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21262561058 + 21262561059.

It is an arithmetic number, because the mean of its divisors is an integer number (21262561059).

Almost surely, 2^42525122117 is an apocalyptic number.

It is an amenable number.

42525122117 is a deficient number, since it is larger than the sum of its proper divisors (1).

42525122117 is an equidigital number, since it uses as much as digits as its factorization.

42525122117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11200, while the sum is 32.

The spelling of 42525122117 in words is "forty-two billion, five hundred twenty-five million, one hundred twenty-two thousand, one hundred seventeen".