4166805725 has 6 divisors (see below), whose sum is σ = 5166839130. Its totient is φ = 3333444560.

The previous prime is 4166805707. The next prime is 4166805733. The reversal of 4166805725 is 5275086614.

It can be written as a sum of positive squares in 3 ways, for example, as 232324 + 4166573401 = 482^2 + 64549^2 .

It is not a de Polignac number, because 4166805725 - 2⁶ = 4166805661 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83336090 + ... + 83336139.

It is an arithmetic number, because the mean of its divisors is an integer number (861139855).

Almost surely, 2^4166805725 is an apocalyptic number.

It is an amenable number.

4166805725 is a deficient number, since it is larger than the sum of its proper divisors (1000033405).

4166805725 is a wasteful number, since it uses less digits than its factorization.

4166805725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166672239 (or 166672234 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 44.

The square root of 4166805725 is about 64550.7995690216. The cubic root of 4166805725 is about 1609.1668753895.

The spelling of 4166805725 in words is "four billion, one hundred sixty-six million, eight hundred five thousand, seven hundred twenty-five".