2261625305 has 16 divisors (see below), whose sum is σ = 2923305984. Its totient is φ = 1674805440.

The previous prime is 2261625299. The next prime is 2261625323. The reversal of 2261625305 is 5035261622.

It is not a de Polignac number, because 2261625305 - 2⁶ = 2261625241 is a prime.

It is a super-2 number, since 2×2261625305² = 10229898040432686050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313634 + ... + 320763.

It is an arithmetic number, because the mean of its divisors is an integer number (182706624).

Almost surely, 2^2261625305 is an apocalyptic number.

It is an amenable number.

2261625305 is a deficient number, since it is larger than the sum of its proper divisors (661680679).

2261625305 is a wasteful number, since it uses less digits than its factorization.

2261625305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634456.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 2261625305 is about 47556.5484975518. The cubic root of 2261625305 is about 1312.6236301382.

Adding to 2261625305 its reverse (5035261622), we get a palindrome (7296886927).

The spelling of 2261625305 in words is "two billion, two hundred sixty-one million, six hundred twenty-five thousand, three hundred five".