417125745781 has 2 divisors, whose sum is σ = 417125745782. Its totient is φ = 417125745780.

The previous prime is 417125745739. The next prime is 417125745887. The reversal of 417125745781 is 187547521714.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258933411025 + 158192334756 = 508855^2 + 397734^2 .

It is a cyclic number.

It is not a de Polignac number, because 417125745781 - 2¹¹ = 417125743733 is a prime.

It is a super-2 number, since 2×417125745781² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (417125745721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208562872890 + 208562872891.

It is an arithmetic number, because the mean of its divisors is an integer number (208562872891).

Almost surely, 2^417125745781 is an apocalyptic number.

It is an amenable number.

417125745781 is a deficient number, since it is larger than the sum of its proper divisors (1).

417125745781 is an equidigital number, since it uses as much as digits as its factorization.

417125745781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2195200, while the sum is 52.

The spelling of 417125745781 in words is "four hundred seventeen billion, one hundred twenty-five million, seven hundred forty-five thousand, seven hundred eighty-one".