198625567 has 12 divisors (see below), whose sum is σ = 232534920. Its totient is φ = 169159536.

The previous prime is 198625561. The next prime is 198625573. The reversal of 198625567 is 765526891.

It is an interprime number because it is at equal distance from previous prime (198625561) and next prime (198625573).

It is not a de Polignac number, because 198625567 - 2⁷ = 198625439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198625567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198625561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5217 + ... + 20602.

It is an arithmetic number, because the mean of its divisors is an integer number (19377910).

Almost surely, 2^198625567 is an apocalyptic number.

198625567 is a deficient number, since it is larger than the sum of its proper divisors (33909353).

198625567 is a wasteful number, since it uses less digits than its factorization.

198625567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25990 (or 25983 counting only the distinct ones).

The product of its digits is 907200, while the sum is 49.

The square root of 198625567 is about 14093.4583051854. The cubic root of 198625567 is about 583.4608450139.

The spelling of 198625567 in words is "one hundred ninety-eight million, six hundred twenty-five thousand, five hundred sixty-seven".