197654225 has 12 divisors (see below), whose sum is σ = 249717276. Its totient is φ = 155138880.

The previous prime is 197654173. The next prime is 197654239. The reversal of 197654225 is 522456791.

It can be written as a sum of positive squares in 6 ways, for example, as 9168784 + 188485441 = 3028^2 + 13729^2 .

It is not a de Polignac number, because 197654225 - 2⁶ = 197654161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73262 + ... + 75911.

It is an arithmetic number, because the mean of its divisors is an integer number (20809773).

Almost surely, 2^197654225 is an apocalyptic number.

It is an amenable number.

197654225 is a deficient number, since it is larger than the sum of its proper divisors (52063051).

197654225 is a wasteful number, since it uses less digits than its factorization.

197654225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149236 (or 149231 counting only the distinct ones).

The product of its digits is 151200, while the sum is 41.

The square root of 197654225 is about 14058.9553310337. The cubic root of 197654225 is about 582.5081875472.

The spelling of 197654225 in words is "one hundred ninety-seven million, six hundred fifty-four thousand, two hundred twenty-five".