197689625 has 16 divisors (see below), whose sum is σ = 281963136. Its totient is φ = 135558000.

The previous prime is 197689601. The next prime is 197689633. The reversal of 197689625 is 526986791.

It is not a de Polignac number, because 197689625 - 2⁶ = 197689561 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112091 + ... + 113840.

It is an arithmetic number, because the mean of its divisors is an integer number (17622696).

Almost surely, 2^197689625 is an apocalyptic number.

It is an amenable number.

197689625 is a deficient number, since it is larger than the sum of its proper divisors (84273511).

197689625 is an equidigital number, since it uses as much as digits as its factorization.

197689625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225953 (or 225943 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 53.

The square root of 197689625 is about 14060.2142586804. The cubic root of 197689625 is about 582.5429613362.

The spelling of 197689625 in words is "one hundred ninety-seven million, six hundred eighty-nine thousand, six hundred twenty-five".