398452625 has 8 divisors (see below), whose sum is σ = 497269032. Its totient is φ = 318762000.

The previous prime is 398452619. The next prime is 398452631. The reversal of 398452625 is 526254893.

It is an interprime number because it is at equal distance from previous prime (398452619) and next prime (398452631).

It can be written as a sum of positive squares in 4 ways, for example, as 4787344 + 393665281 = 2188^2 + 19841^2 .

It is not a de Polignac number, because 398452625 - 2¹² = 398448529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1593686 + ... + 1593935.

It is an arithmetic number, because the mean of its divisors is an integer number (62158629).

Almost surely, 2^398452625 is an apocalyptic number.

It is an amenable number.

398452625 is a deficient number, since it is larger than the sum of its proper divisors (98816407).

398452625 is an equidigital number, since it uses as much as digits as its factorization.

398452625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3187636 (or 3187626 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

The square root of 398452625 is about 19961.2781404398. The cubic root of 398452625 is about 735.8549755855.

The spelling of 398452625 in words is "three hundred ninety-eight million, four hundred fifty-two thousand, six hundred twenty-five".