425503817 has 2 divisors, whose sum is σ = 425503818. Its totient is φ = 425503816.

The previous prime is 425503783. The next prime is 425503987. The reversal of 425503817 is 718305524.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310499641 + 115004176 = 17621^2 + 10724^2 .

It is a cyclic number.

It is not a de Polignac number, because 425503817 - 2⁶ = 425503753 is a prime.

It is not a weakly prime, because it can be changed into another prime (425506817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212751908 + 212751909.

It is an arithmetic number, because the mean of its divisors is an integer number (212751909).

Almost surely, 2^425503817 is an apocalyptic number.

It is an amenable number.

425503817 is a deficient number, since it is larger than the sum of its proper divisors (1).

425503817 is an equidigital number, since it uses as much as digits as its factorization.

425503817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 425503817 is about 20627.7438659685. The cubic root of 425503817 is about 752.1442736854.

The spelling of 425503817 in words is "four hundred twenty-five million, five hundred three thousand, eight hundred seventeen".