663343425 has 60 divisors (see below), whose sum is σ = 1268498176. Its totient is φ = 342338400.

The previous prime is 663343411. The next prime is 663343441. The reversal of 663343425 is 524343366.

It is not a de Polignac number, because 663343425 - 2⁵ = 663343393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 663343425.

It is an unprimeable number.

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 59 ways as a sum of consecutive naturals, for example, 57492 + ... + 68058.

Almost surely, 2^663343425 is an apocalyptic number.

It is an amenable number.

663343425 is a deficient number, since it is larger than the sum of its proper divisors (605154751).

663343425 is a wasteful number, since it uses less digits than its factorization.

663343425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10620 (or 10606 counting only the distinct ones).

The product of its digits is 155520, while the sum is 36.

The square root of 663343425 is about 25755.4542767158. The cubic root of 663343425 is about 872.1264865932.

The spelling of 663343425 in words is "six hundred sixty-three million, three hundred forty-three thousand, four hundred twenty-five".