425390593 has 2 divisors, whose sum is σ = 425390594. Its totient is φ = 425390592.

The previous prime is 425390579. The next prime is 425390599. The reversal of 425390593 is 395093524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325730304 + 99660289 = 18048^2 + 9983^2 .

It is a cyclic number.

It is not a de Polignac number, because 425390593 - 2²⁵ = 391836161 is a prime.

It is a super-2 number, since 2×425390593² = 361914313225783298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (425390599) 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, 212695296 + 212695297.

It is an arithmetic number, because the mean of its divisors is an integer number (212695297).

Almost surely, 2^425390593 is an apocalyptic number.

It is an amenable number.

425390593 is a deficient number, since it is larger than the sum of its proper divisors (1).

425390593 is an equidigital number, since it uses as much as digits as its factorization.

425390593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 40.

The square root of 425390593 is about 20624.9992242424. Note that the first 3 decimals coincide. The cubic root of 425390593 is about 752.0775540819.

The spelling of 425390593 in words is "four hundred twenty-five million, three hundred ninety thousand, five hundred ninety-three".