425663677 has 2 divisors, whose sum is σ = 425663678. Its totient is φ = 425663676.

The previous prime is 425663627. The next prime is 425663699. The reversal of 425663677 is 776366524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 420004036 + 5659641 = 20494^2 + 2379^2 .

It is a cyclic number.

It is not a de Polignac number, because 425663677 - 2¹⁹ = 425139389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425663627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212831838 + 212831839.

It is an arithmetic number, because the mean of its divisors is an integer number (212831839).

Almost surely, 2^425663677 is an apocalyptic number.

It is an amenable number.

425663677 is a deficient number, since it is larger than the sum of its proper divisors (1).

425663677 is an equidigital number, since it uses as much as digits as its factorization.

425663677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 46.

The square root of 425663677 is about 20631.6183805343. The cubic root of 425663677 is about 752.2384543753.

The spelling of 425663677 in words is "four hundred twenty-five million, six hundred sixty-three thousand, six hundred seventy-seven".