197930225 has 6 divisors (see below), whose sum is σ = 245433510. Its totient is φ = 158344160.

The previous prime is 197930221. The next prime is 197930231. The reversal of 197930225 is 522039791.

It can be written as a sum of positive squares in 3 ways, for example, as 35724529 + 162205696 = 5977^2 + 12736^2 .

It is not a de Polignac number, because 197930225 - 2² = 197930221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (197930221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3958580 + ... + 3958629.

It is an arithmetic number, because the mean of its divisors is an integer number (40905585).

Almost surely, 2^197930225 is an apocalyptic number.

It is an amenable number.

197930225 is a deficient number, since it is larger than the sum of its proper divisors (47503285).

197930225 is an equidigital number, since it uses as much as digits as its factorization.

197930225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7917219 (or 7917214 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 197930225 is about 14068.7677143380. The cubic root of 197930225 is about 582.7791953047.

The spelling of 197930225 in words is "one hundred ninety-seven million, nine hundred thirty thousand, two hundred twenty-five".