663235425 has 24 divisors (see below), whose sum is σ = 1218389280. Its totient is φ = 353725200.

The previous prime is 663235381. The next prime is 663235439. The reversal of 663235425 is 524532366.

It is not a de Polignac number, because 663235425 - 2⁶ = 663235361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 663235425.

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 23 ways as a sum of consecutive naturals, for example, 490611 + ... + 491960.

It is an arithmetic number, because the mean of its divisors is an integer number (50766220).

Almost surely, 2^663235425 is an apocalyptic number.

It is an amenable number.

663235425 is a deficient number, since it is larger than the sum of its proper divisors (555153855).

663235425 is a wasteful number, since it uses less digits than its factorization.

663235425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982590 (or 982579 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The square root of 663235425 is about 25753.3575480946. The cubic root of 663235425 is about 872.0791532566.

The spelling of 663235425 in words is "six hundred sixty-three million, two hundred thirty-five thousand, four hundred twenty-five".