209025041 has 4 divisors (see below), whose sum is σ = 210620784. Its totient is φ = 207429300.

The previous prime is 209025029. The next prime is 209025043. The reversal of 209025041 is 140520902.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-209025041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 209024998 and 209025016.

It is not an unprimeable number, because it can be changed into a prime (209025043) 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 3 ways as a sum of consecutive naturals, for example, 797675 + ... + 797936.

It is an arithmetic number, because the mean of its divisors is an integer number (52655196).

Almost surely, 2^209025041 is an apocalyptic number.

It is an amenable number.

209025041 is a deficient number, since it is larger than the sum of its proper divisors (1595743).

209025041 is a wasteful number, since it uses less digits than its factorization.

209025041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595742.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 209025041 is about 14457.6983299556. The cubic root of 209025041 is about 593.4709140691.

Adding to 209025041 its reverse (140520902), we get a palindrome (349545943).

The spelling of 209025041 in words is "two hundred nine million, twenty-five thousand, forty-one".