425645206646033 has 4 divisors (see below), whose sum is σ = 464340225432048. Its totient is φ = 386950187860020.

The previous prime is 425645206645987. The next prime is 425645206646053. The reversal of 425645206646033 is 330646602546524.

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 425645206646033 - 2⁴² = 421247160134929 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 425645206646033.

It is not an unprimeable number, because it can be changed into a prime (425645206646053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19347509392991 + ... + 19347509393012.

It is an arithmetic number, because the mean of its divisors is an integer number (116085056358012).

Almost surely, 2^{425645206646033} is an apocalyptic number.

It is an amenable number.

425645206646033 is a deficient number, since it is larger than the sum of its proper divisors (38695018786015).

425645206646033 is a wasteful number, since it uses less digits than its factorization.

425645206646033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38695018786014.

The product of its (nonzero) digits is 74649600, while the sum is 56.

The spelling of 425645206646033 in words is "four hundred twenty-five trillion, six hundred forty-five billion, two hundred six million, six hundred forty-six thousand, thirty-three".