4001025066 has 16 divisors (see below), whose sum is σ = 8011332864. Its totient is φ = 1332127904.

The previous prime is 4001025029. The next prime is 4001025079. The reversal of 4001025066 is 6605201004.

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, 381171 + ... + 391526.

It is an arithmetic number, because the mean of its divisors is an integer number (500708304).

Almost surely, 2^4001025066 is an apocalyptic number.

4001025066 is an abundant number, since it is smaller than the sum of its proper divisors (4010307798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4001025066 is a wasteful number, since it uses less digits than its factorization.

4001025066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773565.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 4001025066 is about 63253.6565425272. The cubic root of 4001025066 is about 1587.5366396239.

The spelling of 4001025066 in words is "four billion, one million, twenty-five thousand, sixty-six".