2725661906 has 16 divisors (see below), whose sum is σ = 4580720640. Its totient is φ = 1205452080.

The previous prime is 2725661839. The next prime is 2725661951. The reversal of 2725661906 is 6091665272.

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, 1673426 + ... + 1675053.

It is an arithmetic number, because the mean of its divisors is an integer number (286295040).

Almost surely, 2^2725661906 is an apocalyptic number.

2725661906 is a deficient number, since it is larger than the sum of its proper divisors (1855058734).

2725661906 is a wasteful number, since it uses less digits than its factorization.

2725661906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3348529.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 2725661906 is about 52207.8720692579. The cubic root of 2725661906 is about 1396.8743031665.

It can be divided in two parts, 272566 and 1906, that added together give a palindrome (274472).

The spelling of 2725661906 in words is "two billion, seven hundred twenty-five million, six hundred sixty-one thousand, nine hundred six".