2506173820 has 12 divisors (see below), whose sum is σ = 5262965064. Its totient is φ = 1002469520.

The previous prime is 2506173781. The next prime is 2506173821. The reversal of 2506173820 is 283716052.

It is a happy number.

2506173820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2506173821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62654326 + ... + 62654365.

It is an arithmetic number, because the mean of its divisors is an integer number (438580422).

Almost surely, 2^2506173820 is an apocalyptic number.

2506173820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2506173820 is an abundant number, since it is smaller than the sum of its proper divisors (2756791244).

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

2506173820 is a wasteful number, since it uses less digits than its factorization.

2506173820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125308700 (or 125308698 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 2506173820 is about 50061.7001309384. The cubic root of 2506173820 is about 1358.3251116050.

Adding to 2506173820 its reverse (283716052), we get a palindrome (2789889872).

The spelling of 2506173820 in words is "two billion, five hundred six million, one hundred seventy-three thousand, eight hundred twenty".