425583217 has 2 divisors, whose sum is σ = 425583218. Its totient is φ = 425583216.

The previous prime is 425583203. The next prime is 425583233. The reversal of 425583217 is 712385524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 409010176 + 16573041 = 20224^2 + 4071^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425583217 is a prime.

It is a super-2 number, since 2×425583217² = 362242149184138178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (425583817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212791608 + 212791609.

It is an arithmetic number, because the mean of its divisors is an integer number (212791609).

Almost surely, 2^425583217 is an apocalyptic number.

It is an amenable number.

425583217 is a deficient number, since it is larger than the sum of its proper divisors (1).

425583217 is an equidigital number, since it uses as much as digits as its factorization.

425583217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 37.

The square root of 425583217 is about 20629.6683686384. The cubic root of 425583217 is about 752.1910547315.

The spelling of 425583217 in words is "four hundred twenty-five million, five hundred eighty-three thousand, two hundred seventeen".