404666625 has 32 divisors (see below), whose sum is σ = 734587776. Its totient is φ = 196200000.

The previous prime is 404666621. The next prime is 404666641. The reversal of 404666625 is 526666404.

It is not a de Polignac number, because 404666625 - 2² = 404666621 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (404666621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44926 + ... + 53175.

It is an arithmetic number, because the mean of its divisors is an integer number (22955868).

Almost surely, 2^404666625 is an apocalyptic number.

It is an amenable number.

404666625 is a deficient number, since it is larger than the sum of its proper divisors (329921151).

404666625 is a wasteful number, since it uses less digits than its factorization.

404666625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98130 (or 98120 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The square root of 404666625 is about 20116.3273238432. The cubic root of 404666625 is about 739.6605607822.

The spelling of 404666625 in words is "four hundred four million, six hundred sixty-six thousand, six hundred twenty-five".