2531531125 has 16 divisors (see below), whose sum is σ = 3197428416. Its totient is φ = 2000816400.

The previous prime is 2531531117. The next prime is 2531531129. The reversal of 2531531125 is 5211351352.

2531531125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2531531125 - 2³ = 2531531117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2531531093 and 2531531102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531531129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111627 + ... + 132376.

It is an arithmetic number, because the mean of its divisors is an integer number (199839276).

Almost surely, 2^2531531125 is an apocalyptic number.

2531531125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2531531125 is a deficient number, since it is larger than the sum of its proper divisors (665897291).

2531531125 is an equidigital number, since it uses as much as digits as its factorization.

2531531125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244101 (or 244091 counting only the distinct ones).

The product of its digits is 4500, while the sum is 28.

The square root of 2531531125 is about 50314.3232588892. The cubic root of 2531531125 is about 1362.8908958949.

Adding to 2531531125 its reverse (5211351352), we get a palindrome (7742882477).

The spelling of 2531531125 in words is "two billion, five hundred thirty-one million, five hundred thirty-one thousand, one hundred twenty-five".