42198725 has 6 divisors (see below), whose sum is σ = 52326450. Its totient is φ = 33758960.

The previous prime is 42198707. The next prime is 42198731. The reversal of 42198725 is 52789124.

42198725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 195364 + 42003361 = 442^2 + 6481^2 .

It is not a de Polignac number, because 42198725 - 2⁶ = 42198661 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 843950 + ... + 843999.

It is an arithmetic number, because the mean of its divisors is an integer number (8721075).

Almost surely, 2^42198725 is an apocalyptic number.

It is an amenable number.

42198725 is a deficient number, since it is larger than the sum of its proper divisors (10127725).

42198725 is a wasteful number, since it uses less digits than its factorization.

42198725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687959 (or 1687954 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 42198725 is about 6496.0545718151. The cubic root of 42198725 is about 348.1500349443.

The spelling of 42198725 in words is "forty-two million, one hundred ninety-eight thousand, seven hundred twenty-five".