425528813 has 2 divisors, whose sum is σ = 425528814. Its totient is φ = 425528812.

The previous prime is 425528809. The next prime is 425528837. The reversal of 425528813 is 318825524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 301473769 + 124055044 = 17363^2 + 11138^2 .

It is a cyclic number.

It is not a de Polignac number, because 425528813 - 2² = 425528809 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425528893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212764406 + 212764407.

It is an arithmetic number, because the mean of its divisors is an integer number (212764407).

Almost surely, 2^425528813 is an apocalyptic number.

It is an amenable number.

425528813 is a deficient number, since it is larger than the sum of its proper divisors (1).

425528813 is an equidigital number, since it uses as much as digits as its factorization.

425528813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 76800, while the sum is 38.

The square root of 425528813 is about 20628.3497401028. The cubic root of 425528813 is about 752.1590015048.

The spelling of 425528813 in words is "four hundred twenty-five million, five hundred twenty-eight thousand, eight hundred thirteen".