663602225 has 96 divisors (see below), whose sum is σ = 1046183040. Its totient is φ = 410112000.

The previous prime is 663602209. The next prime is 663602239. The reversal of 663602225 is 522206366.

It is not a de Polignac number, because 663602225 - 2⁴ = 663602209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 663602191 and 663602200.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3707186 + ... + 3707364.

It is an arithmetic number, because the mean of its divisors is an integer number (10897740).

Almost surely, 2^663602225 is an apocalyptic number.

663602225 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

663602225 is a deficient number, since it is larger than the sum of its proper divisors (382580815).

663602225 is a wasteful number, since it uses less digits than its factorization.

663602225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 663602225 is about 25760.4779652863. The cubic root of 663602225 is about 872.2398903897.

The spelling of 663602225 in words is "six hundred sixty-three million, six hundred two thousand, two hundred twenty-five".