4025881066 has 4 divisors (see below), whose sum is σ = 6038821602. Its totient is φ = 2012940532.

The previous prime is 4025881043. The next prime is 4025881073. The reversal of 4025881066 is 6601885204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3816644841 + 209236225 = 61779^2 + 14465^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006470265 + ... + 1006470268.

Almost surely, 2^4025881066 is an apocalyptic number.

4025881066 is a deficient number, since it is larger than the sum of its proper divisors (2012940536).

4025881066 is a wasteful number, since it uses less digits than its factorization.

4025881066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012940535.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 4025881066 is about 63449.8310951259. The cubic root of 4025881066 is about 1590.8173304004.

The spelling of 4025881066 in words is "four billion, twenty-five million, eight hundred eighty-one thousand, sixty-six".