198525563 has 2 divisors, whose sum is σ = 198525564. Its totient is φ = 198525562.

The previous prime is 198525557. The next prime is 198525611. The reversal of 198525563 is 365525891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198525563 - 2⁸ = 198525307 is a prime.

It is not a weakly prime, because it can be changed into another prime (198525533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99262781 + 99262782.

It is an arithmetic number, because the mean of its divisors is an integer number (99262782).

Almost surely, 2^198525563 is an apocalyptic number.

198525563 is a deficient number, since it is larger than the sum of its proper divisors (1).

198525563 is an equidigital number, since it uses as much as digits as its factorization.

198525563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324000, while the sum is 44.

The square root of 198525563 is about 14089.9099713235. The cubic root of 198525563 is about 583.3629082874.

The spelling of 198525563 in words is "one hundred ninety-eight million, five hundred twenty-five thousand, five hundred sixty-three".