425747161 has 4 divisors (see below), whose sum is σ = 486568192. Its totient is φ = 364926132.

The previous prime is 425747159. The next prime is 425747177. The reversal of 425747161 is 161747524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 425747161 - 2¹ = 425747159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 425747161.

It is not an unprimeable number, because it can be changed into a prime (425747111) 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 in 3 ways as a sum of consecutive naturals, for example, 30410505 + ... + 30410518.

It is an arithmetic number, because the mean of its divisors is an integer number (121642048).

Almost surely, 2^425747161 is an apocalyptic number.

It is an amenable number.

425747161 is a deficient number, since it is larger than the sum of its proper divisors (60821031).

425747161 is an equidigital number, since it uses as much as digits as its factorization.

425747161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60821030.

The product of its digits is 47040, while the sum is 37.

The square root of 425747161 is about 20633.6414866596. The cubic root of 425747161 is about 752.2876291686.

The spelling of 425747161 in words is "four hundred twenty-five million, seven hundred forty-seven thousand, one hundred sixty-one".