425517773 has 2 divisors, whose sum is σ = 425517774. Its totient is φ = 425517772.

The previous prime is 425517731. The next prime is 425517793. The reversal of 425517773 is 377715524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 424442404 + 1075369 = 20602^2 + 1037^2 .

It is a cyclic number.

It is not a de Polignac number, because 425517773 - 2⁶ = 425517709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 425517773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425517793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212758886 + 212758887.

It is an arithmetic number, because the mean of its divisors is an integer number (212758887).

Almost surely, 2^425517773 is an apocalyptic number.

It is an amenable number.

425517773 is a deficient number, since it is larger than the sum of its proper divisors (1).

425517773 is an equidigital number, since it uses as much as digits as its factorization.

425517773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 205800, while the sum is 41.

The square root of 425517773 is about 20628.0821454637. The cubic root of 425517773 is about 752.1524967301.

The spelling of 425517773 in words is "four hundred twenty-five million, five hundred seventeen thousand, seven hundred seventy-three".