394606448025 has 48 divisors (see below), whose sum is σ = 656410368000. Its totient is φ = 209170589760.

The previous prime is 394606448021. The next prime is 394606448039. The reversal of 394606448025 is 520844606493.

It is not a de Polignac number, because 394606448025 - 2² = 394606448021 is a prime.

It is not an unprimeable number, because it can be changed into a prime (394606448021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14120016 + ... + 14147934.

It is an arithmetic number, because the mean of its divisors is an integer number (13675216000).

Almost surely, 2^394606448025 is an apocalyptic number.

It is an amenable number.

394606448025 is a deficient number, since it is larger than the sum of its proper divisors (261803919975).

394606448025 is a wasteful number, since it uses less digits than its factorization.

394606448025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29078 (or 29073 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 51.

The spelling of 394606448025 in words is "three hundred ninety-four billion, six hundred six million, four hundred forty-eight thousand, twenty-five".