398118525 has 96 divisors (see below), whose sum is σ = 790425600. Its totient is φ = 172972800.

The previous prime is 398118509. The next prime is 398118541. The reversal of 398118525 is 525811893.

It is an interprime number because it is at equal distance from previous prime (398118509) and next prime (398118541).

It is not a de Polignac number, because 398118525 - 2⁴ = 398118509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1202610 + ... + 1202940.

It is an arithmetic number, because the mean of its divisors is an integer number (8233600).

Almost surely, 2^398118525 is an apocalyptic number.

398118525 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

398118525 is a deficient number, since it is larger than the sum of its proper divisors (392307075).

398118525 is a wasteful number, since it uses less digits than its factorization.

398118525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459 (or 454 counting only the distinct ones).

The product of its digits is 86400, while the sum is 42.

The square root of 398118525 is about 19952.9076828416. The cubic root of 398118525 is about 735.6492481637.

The spelling of 398118525 in words is "three hundred ninety-eight million, one hundred eighteen thousand, five hundred twenty-five".