198525611 has 2 divisors, whose sum is σ = 198525612. Its totient is φ = 198525610.

The previous prime is 198525563. The next prime is 198525629. The reversal of 198525611 is 116525891.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198525611 is a prime.

It is not a weakly prime, because it can be changed into another prime (198525641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99262805 + 99262806.

It is an arithmetic number, because the mean of its divisors is an integer number (99262806).

Almost surely, 2^198525611 is an apocalyptic number.

198525611 is a deficient number, since it is larger than the sum of its proper divisors (1).

198525611 is an equidigital number, since it uses as much as digits as its factorization.

198525611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 38.

The square root of 198525611 is about 14089.9116746699. The cubic root of 198525611 is about 583.3629553030.

The spelling of 198525611 in words is "one hundred ninety-eight million, five hundred twenty-five thousand, six hundred eleven".