425813 has 2 divisors, whose sum is σ = 425814. Its totient is φ = 425812.

The previous prime is 425801. The next prime is 425819. The reversal of 425813 is 318524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 407044 + 18769 = 638^2 + 137^2 .

It is a cyclic number.

It is not a de Polignac number, because 425813 - 2¹² = 421717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425819) 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 as a sum of consecutive naturals, namely, 212906 + 212907.

It is an arithmetic number, because the mean of its divisors is an integer number (212907).

2⁴²⁵⁸¹³ is an apocalyptic number.

It is an amenable number.

425813 is a deficient number, since it is larger than the sum of its proper divisors (1).

425813 is an equidigital number, since it uses as much as digits as its factorization.

425813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 23.

The square root of 425813 is about 652.5434851410. The cubic root of 425813 is about 75.2326405949.

The spelling of 425813 in words is "four hundred twenty-five thousand, eight hundred thirteen".