3205420245 has 12 divisors (see below), whose sum is σ = 5556061836. Its totient is φ = 1709557440.

The previous prime is 3205420237. The next prime is 3205420301. The reversal of 3205420245 is 5420245023.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1422722961 + 1782697284 = 37719^2 + 42222^2 .

It is not a de Polignac number, because 3205420245 - 2³ = 3205420237 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 (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35615736 + ... + 35615825.

It is an arithmetic number, because the mean of its divisors is an integer number (463005153).

Almost surely, 2^3205420245 is an apocalyptic number.

It is an amenable number.

3205420245 is a deficient number, since it is larger than the sum of its proper divisors (2350641591).

3205420245 is a wasteful number, since it uses less digits than its factorization.

3205420245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71231572 (or 71231569 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 3205420245 is about 56616.4308747911. The cubic root of 3205420245 is about 1474.4441448561. Note that the first 3 decimals are identical.

Adding to 3205420245 its reverse (5420245023), we get a palindrome (8625665268).

The spelling of 3205420245 in words is "three billion, two hundred five million, four hundred twenty thousand, two hundred forty-five".