425231329 has 2 divisors, whose sum is σ = 425231330. Its totient is φ = 425231328.

The previous prime is 425231299. The next prime is 425231369. The reversal of 425231329 is 923132524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 348195600 + 77035729 = 18660^2 + 8777^2 .

It is a cyclic number.

It is not a de Polignac number, because 425231329 - 2⁷ = 425231201 is a prime.

It is equal to p_22608166 and since 425231329 and 22608166 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 425231329.

It is not a weakly prime, because it can be changed into another prime (425231369) 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, 212615664 + 212615665.

It is an arithmetic number, because the mean of its divisors is an integer number (212615665).

Almost surely, 2^425231329 is an apocalyptic number.

It is an amenable number.

425231329 is a deficient number, since it is larger than the sum of its proper divisors (1).

425231329 is an equidigital number, since it uses as much as digits as its factorization.

425231329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 425231329 is about 20621.1379171955. The cubic root of 425231329 is about 751.9836844063.

The spelling of 425231329 in words is "four hundred twenty-five million, two hundred thirty-one thousand, three hundred twenty-nine".