198105625 has 15 divisors (see below), whose sum is σ = 247993273. Its totient is φ = 158203000.

The previous prime is 198105617. The next prime is 198105653. The reversal of 198105625 is 526501891.

The square root of 198105625 is 14075.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 15531481 + 182574144 = 3941^2 + 13512^2 .

It is not a de Polignac number, because 198105625 - 2³ = 198105617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 351594 + ... + 352156.

Almost surely, 2^198105625 is an apocalyptic number.

198105625 is the 14075-th square number.

198105625 is the 7038-th centered octagonal number.

It is an amenable number.

198105625 is a deficient number, since it is larger than the sum of its proper divisors (49887648).

198105625 is an frugal number, since it uses more digits than its factorization.

198105625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146 (or 568 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 37.

The cubic root of 198105625 is about 582.9512917949.

The spelling of 198105625 in words is "one hundred ninety-eight million, one hundred five thousand, six hundred twenty-five".