398335625 has 10 divisors (see below), whose sum is σ = 497760978. Its totient is φ = 318668000.

The previous prime is 398335621. The next prime is 398335633. The reversal of 398335625 is 526533893.

It is a happy number.

398335625 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 49505296 + 348830329 = 7036^2 + 18677^2 .

It is not a de Polignac number, because 398335625 - 2² = 398335621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (398335621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 318044 + ... + 319293.

Almost surely, 2^398335625 is an apocalyptic number.

It is an amenable number.

398335625 is a deficient number, since it is larger than the sum of its proper divisors (99425353).

398335625 is an frugal number, since it uses more digits than its factorization.

398335625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637357 (or 637342 counting only the distinct ones).

The product of its digits is 583200, while the sum is 44.

The square root of 398335625 is about 19958.3472512130. The cubic root of 398335625 is about 735.7829440523.

The spelling of 398335625 in words is "three hundred ninety-eight million, three hundred thirty-five thousand, six hundred twenty-five".