425543145352205 has 4 divisors (see below), whose sum is σ = 510651774422652. Its totient is φ = 340434516281760.

The previous prime is 425543145352153. The next prime is 425543145352267. The reversal of 425543145352205 is 502253541345524.

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 115999728280489 + 309543417071716 = 10770317^2 + 17593846^2 .

It is not a de Polignac number, because 425543145352205 - 2³⁸ = 425268267445261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42554314535216 + ... + 42554314535225.

It is an arithmetic number, because the mean of its divisors is an integer number (127662943605663).

Almost surely, 2^{425543145352205} is an apocalyptic number.

It is an amenable number.

425543145352205 is a deficient number, since it is larger than the sum of its proper divisors (85108629070447).

425543145352205 is an equidigital number, since it uses as much as digits as its factorization.

425543145352205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85108629070446.

The product of its (nonzero) digits is 14400000, while the sum is 50.

Adding to 425543145352205 its reverse (502253541345524), we get a palindrome (927796686697729).

The spelling of 425543145352205 in words is "four hundred twenty-five trillion, five hundred forty-three billion, one hundred forty-five million, three hundred fifty-two thousand, two hundred five".