642325105417 has 2 divisors, whose sum is σ = 642325105418. Its totient is φ = 642325105416.

The previous prime is 642325105381. The next prime is 642325105447. The reversal of 642325105417 is 714501523246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 554601920656 + 87723184761 = 744716^2 + 296181^2 .

It is a cyclic number.

It is not a de Polignac number, because 642325105417 - 2³⁵ = 607965367049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 642325105417.

It is not a weakly prime, because it can be changed into another prime (642325105447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321162552708 + 321162552709.

It is an arithmetic number, because the mean of its divisors is an integer number (321162552709).

Almost surely, 2^642325105417 is an apocalyptic number.

It is an amenable number.

642325105417 is a deficient number, since it is larger than the sum of its proper divisors (1).

642325105417 is an equidigital number, since it uses as much as digits as its factorization.

642325105417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 642325105417 in words is "six hundred forty-two billion, three hundred twenty-five million, one hundred five thousand, four hundred seventeen".