2500421771 has 4 divisors (see below), whose sum is σ = 2500666344. Its totient is φ = 2500177200.

The previous prime is 2500421767. The next prime is 2500421773. The reversal of 2500421771 is 1771240052.

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

It is a cyclic number.

It is not a de Polignac number, because 2500421771 - 2² = 2500421767 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2500421773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106250 + ... + 127631.

It is an arithmetic number, because the mean of its divisors is an integer number (625166586).

Almost surely, 2^2500421771 is an apocalyptic number.

2500421771 is a deficient number, since it is larger than the sum of its proper divisors (244573).

2500421771 is a wasteful number, since it uses less digits than its factorization.

2500421771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244572.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 2500421771 is about 50004.2175321242. The cubic root of 2500421771 is about 1357.2851281812.

The spelling of 2500421771 in words is "two billion, five hundred million, four hundred twenty-one thousand, seven hundred seventy-one".