198435025 has 12 divisors (see below), whose sum is σ = 246288924. Its totient is φ = 158600000.

The previous prime is 198435019. The next prime is 198435037. The reversal of 198435025 is 520534891.

It can be written as a sum of positive squares in 6 ways, for example, as 37246609 + 161188416 = 6103^2 + 12696^2 .

It is a de Polignac number, because none of the positive numbers 2^k-198435025 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29475 + ... + 35575.

It is an arithmetic number, because the mean of its divisors is an integer number (20524077).

Almost surely, 2^198435025 is an apocalyptic number.

It is an amenable number.

198435025 is a deficient number, since it is larger than the sum of its proper divisors (47853899).

198435025 is a wasteful number, since it uses less digits than its factorization.

198435025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7412 (or 7407 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 198435025 is about 14086.6967384125. The cubic root of 198435025 is about 583.2742135096.

The spelling of 198435025 in words is "one hundred ninety-eight million, four hundred thirty-five thousand, twenty-five".