425785477 has 18 divisors (see below), whose sum is σ = 471300018. Its totient is φ = 382387968.

The previous prime is 425785457. The next prime is 425785483. The reversal of 425785477 is 774587524.

It can be written as a sum of positive squares in 3 ways, for example, as 9054081 + 416731396 = 3009^2 + 20414^2 .

It is not a de Polignac number, because 425785477 - 2¹⁹ = 425261189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 425785477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425785457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4389493 + ... + 4389589.

Almost surely, 2^425785477 is an apocalyptic number.

It is an amenable number.

425785477 is a deficient number, since it is larger than the sum of its proper divisors (45514541).

425785477 is an frugal number, since it uses more digits than its factorization.

425785477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325 (or 169 counting only the distinct ones).

The product of its digits is 2195200, while the sum is 49.

The square root of 425785477 is about 20634.5699494804. The cubic root of 425785477 is about 752.3101963875.

The spelling of 425785477 in words is "four hundred twenty-five million, seven hundred eighty-five thousand, four hundred seventy-seven".