398262425 has 54 divisors (see below), whose sum is σ = 564991182. Its totient is φ = 278256000.

The previous prime is 398262421. The next prime is 398262427. The reversal of 398262425 is 524262893.

It can be written as a sum of positive squares in 3 ways, for example, as 33605209 + 364657216 = 5797^2 + 19096^2 .

It is not a de Polignac number, because 398262425 - 2² = 398262421 is a prime.

It is a super-2 number, since 2×398262425² = 317225918333761250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398262421) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 2906957 + ... + 2907093.

Almost surely, 2^398262425 is an apocalyptic number.

It is an amenable number.

398262425 is a deficient number, since it is larger than the sum of its proper divisors (166728757).

398262425 is a wasteful number, since it uses less digits than its factorization.

398262425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 184 counting only the distinct ones).

The product of its digits is 207360, while the sum is 41.

The square root of 398262425 is about 19956.5133477770. The cubic root of 398262425 is about 735.7378709970.

The spelling of 398262425 in words is "three hundred ninety-eight million, two hundred sixty-two thousand, four hundred twenty-five".