663425113625 has 16 divisors (see below), whose sum is σ = 828060330240. Its totient is φ = 530672278000.

The previous prime is 663425113607. The next prime is 663425113633. The reversal of 663425113625 is 526311524366.

It is not a de Polignac number, because 663425113625 - 2¹⁰ = 663425112601 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 654770 + ... + 1324980.

It is an arithmetic number, because the mean of its divisors is an integer number (51753770640).

Almost surely, 2^663425113625 is an apocalyptic number.

It is an amenable number.

663425113625 is a deficient number, since it is larger than the sum of its proper divisors (164635216615).

663425113625 is an equidigital number, since it uses as much as digits as its factorization.

663425113625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678145 (or 678135 counting only the distinct ones).

The product of its digits is 777600, while the sum is 44.

The spelling of 663425113625 in words is "six hundred sixty-three billion, four hundred twenty-five million, one hundred thirteen thousand, six hundred twenty-five".