425663271247 has 4 divisors (see below), whose sum is σ = 426611296800. Its totient is φ = 424715245696.

The previous prime is 425663271221. The next prime is 425663271263. The reversal of 425663271247 is 742172366524.

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

It is a cyclic number.

It is not a de Polignac number, because 425663271247 - 2⁷ = 425663271119 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 425663271247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425663271947) by changing a digit.

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, 474012103 + ... + 474013000.

It is an arithmetic number, because the mean of its divisors is an integer number (106652824200).

Almost surely, 2^425663271247 is an apocalyptic number.

425663271247 is a deficient number, since it is larger than the sum of its proper divisors (948025553).

425663271247 is an equidigital number, since it uses as much as digits as its factorization.

425663271247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948025552.

The product of its digits is 3386880, while the sum is 49.

The spelling of 425663271247 in words is "four hundred twenty-five billion, six hundred sixty-three million, two hundred seventy-one thousand, two hundred forty-seven".