197218125 has 160 divisors (see below), whose sum is σ = 419865600. Its totient is φ = 90720000.

The previous prime is 197218121. The next prime is 197218127. The reversal of 197218125 is 521812791.

It is a happy number.

It is not a de Polignac number, because 197218125 - 2² = 197218121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 197218125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197218121) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 6361860 + ... + 6361890.

It is an arithmetic number, because the mean of its divisors is an integer number (2624160).

Almost surely, 2^197218125 is an apocalyptic number.

197218125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

197218125 is an abundant number, since it is smaller than the sum of its proper divisors (222647475).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197218125 is a wasteful number, since it uses less digits than its factorization.

197218125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 81 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The square root of 197218125 is about 14043.4370792908. The cubic root of 197218125 is about 582.0794609330.

The spelling of 197218125 in words is "one hundred ninety-seven million, two hundred eighteen thousand, one hundred twenty-five".