198425567 has 2 divisors, whose sum is σ = 198425568. Its totient is φ = 198425566.

The previous prime is 198425537. The next prime is 198425573. The reversal of 198425567 is 765524891.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198425567 - 2⁶ = 198425503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198425537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99212783 + 99212784.

It is an arithmetic number, because the mean of its divisors is an integer number (99212784).

Almost surely, 2^198425567 is an apocalyptic number.

198425567 is a deficient number, since it is larger than the sum of its proper divisors (1).

198425567 is an equidigital number, since it uses as much as digits as its factorization.

198425567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 47.

The square root of 198425567 is about 14086.3610276040. The cubic root of 198425567 is about 583.2649465046.

The spelling of 198425567 in words is "one hundred ninety-eight million, four hundred twenty-five thousand, five hundred sixty-seven".