425430505 has 4 divisors (see below), whose sum is σ = 510516612. Its totient is φ = 340344400.

The previous prime is 425430497. The next prime is 425430541. The reversal of 425430505 is 505034524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 190329616 + 235100889 = 13796^2 + 15333^2 .

It is not a de Polignac number, because 425430505 - 2³ = 425430497 is a prime.

It is a super-2 number, since 2×425430505² = 361982229169110050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 42543046 + ... + 42543055.

It is an arithmetic number, because the mean of its divisors is an integer number (127629153).

Almost surely, 2^425430505 is an apocalyptic number.

It is an amenable number.

425430505 is a deficient number, since it is larger than the sum of its proper divisors (85086107).

425430505 is an equidigital number, since it uses as much as digits as its factorization.

425430505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85086106.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 425430505 is about 20625.9667652210. The cubic root of 425430505 is about 752.1010744113.

The spelling of 425430505 in words is "four hundred twenty-five million, four hundred thirty thousand, five hundred five".