663822419025 has 36 divisors (see below), whose sum is σ = 1123121730192. Its totient is φ = 345781064160.

The previous prime is 663822419011. The next prime is 663822419077. The reversal of 663822419025 is 520914228366.

It is a happy number.

It is not a de Polignac number, because 663822419025 - 2²² = 663818224721 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 46261902 + ... + 46276248.

Almost surely, 2^663822419025 is an apocalyptic number.

It is an amenable number.

663822419025 is a deficient number, since it is larger than the sum of its proper divisors (459299311167).

663822419025 is an frugal number, since it uses more digits than its factorization.

663822419025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28750 (or 14398 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 663822419025 in words is "six hundred sixty-three billion, eight hundred twenty-two million, four hundred nineteen thousand, twenty-five".