197408825 has 6 divisors (see below), whose sum is σ = 244786974. Its totient is φ = 157927040.

The previous prime is 197408821. The next prime is 197408831. The reversal of 197408825 is 528804791.

It can be written as a sum of positive squares in 3 ways, for example, as 595984 + 196812841 = 772^2 + 14029^2 .

It is not a de Polignac number, because 197408825 - 2² = 197408821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197408821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3948152 + ... + 3948201.

It is an arithmetic number, because the mean of its divisors is an integer number (40797829).

Almost surely, 2^197408825 is an apocalyptic number.

It is an amenable number.

197408825 is a deficient number, since it is larger than the sum of its proper divisors (47378149).

197408825 is an equidigital number, since it uses as much as digits as its factorization.

197408825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7896363 (or 7896358 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 197408825 is about 14050.2250871650. The cubic root of 197408825 is about 582.2670143411.

The spelling of 197408825 in words is "one hundred ninety-seven million, four hundred eight thousand, eight hundred twenty-five".