398025 has 36 divisors (see below), whose sum is σ = 749580. Its totient is φ = 201600.

The previous prime is 398023. The next prime is 398029. The reversal of 398025 is 520893.

It can be written as a sum of positive squares in 6 ways, for example, as 69696 + 328329 = 264^2 + 573^2 .

It is not a de Polignac number, because 398025 - 2¹ = 398023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 398025.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 398025.

It is not an unprimeable number, because it can be changed into a prime (398023) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6495 + ... + 6555.

2³⁹⁸⁰²⁵ is an apocalyptic number.

It is an amenable number.

398025 is a deficient number, since it is larger than the sum of its proper divisors (351555).

398025 is a wasteful number, since it uses less digits than its factorization.

398025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 398025 is about 630.8922253444. The cubic root of 398025 is about 73.5591638030.

It can be divided in two parts, 3980 and 25, that added together give a triangular number (4005 = T₈₉).

The spelling of 398025 in words is "three hundred ninety-eight thousand, twenty-five".