198971625 has 32 divisors (see below), whose sum is σ = 333111168. Its totient is φ = 105470400.

The previous prime is 198971623. The next prime is 198971651. The reversal of 198971625 is 526179891.

198971625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 198971625 - 2¹ = 198971623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198971623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63342 + ... + 66408.

It is an arithmetic number, because the mean of its divisors is an integer number (10409724).

Almost surely, 2^198971625 is an apocalyptic number.

198971625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

198971625 is a deficient number, since it is larger than the sum of its proper divisors (134139543).

198971625 is a wasteful number, since it uses less digits than its factorization.

198971625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3258 (or 3248 counting only the distinct ones).

The product of its digits is 272160, while the sum is 48.

The square root of 198971625 is about 14105.7302186027. The cubic root of 198971625 is about 583.7994958544.

The spelling of 198971625 in words is "one hundred ninety-eight million, nine hundred seventy-one thousand, six hundred twenty-five".