398427625 has 16 divisors (see below), whose sum is σ = 523411200. Its totient is φ = 301964400.

The previous prime is 398427613. The next prime is 398427671. The reversal of 398427625 is 526724893.

It is a de Polignac number, because none of the positive numbers 2^k-398427625 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81505 + ... + 86254.

It is an arithmetic number, because the mean of its divisors is an integer number (32713200).

Almost surely, 2^398427625 is an apocalyptic number.

It is an amenable number.

398427625 is a deficient number, since it is larger than the sum of its proper divisors (124983575).

398427625 is a wasteful number, since it uses less digits than its factorization.

398427625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167793 (or 167783 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The square root of 398427625 is about 19960.6519182115. The cubic root of 398427625 is about 735.8395854169.

The spelling of 398427625 in words is "three hundred ninety-eight million, four hundred twenty-seven thousand, six hundred twenty-five".