2725609805 has 8 divisors (see below), whose sum is σ = 3383515800. Its totient is φ = 2105298496.

The previous prime is 2725609771. The next prime is 2725609819. The reversal of 2725609805 is 5089065272.

It can be written as a sum of positive squares in 4 ways, for example, as 943841284 + 1781768521 = 30722^2 + 42211^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2725609805 - 2¹⁸ = 2725347661 is a prime.

It is a super-2 number, since 2×2725609805² = 14857897618224276050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9398510 + ... + 9398799.

It is an arithmetic number, because the mean of its divisors is an integer number (422939475).

Almost surely, 2^2725609805 is an apocalyptic number.

It is an amenable number.

2725609805 is a deficient number, since it is larger than the sum of its proper divisors (657905995).

2725609805 is a wasteful number, since it uses less digits than its factorization.

2725609805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18797343.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 2725609805 is about 52207.3730903979. The cubic root of 2725609805 is about 1396.8654026970.

The spelling of 2725609805 in words is "two billion, seven hundred twenty-five million, six hundred nine thousand, eight hundred five".