2531611225 has 48 divisors (see below), whose sum is σ = 3787882560. Its totient is φ = 1653523200.

The previous prime is 2531611183. The next prime is 2531611267. The reversal of 2531611225 is 5221161352.

2531611225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2531611183) and next prime (2531611267).

It is not a de Polignac number, because 2531611225 - 2⁷ = 2531611097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2531611193 and 2531611202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 122706 + ... + 141844.

It is an arithmetic number, because the mean of its divisors is an integer number (78914220).

Almost surely, 2^2531611225 is an apocalyptic number.

2531611225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2531611225 is a deficient number, since it is larger than the sum of its proper divisors (1256271335).

2531611225 is a wasteful number, since it uses less digits than its factorization.

2531611225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19210 (or 19205 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 2531611225 is about 50315.1192485917. The cubic root of 2531611225 is about 1362.9052701219.

Adding to 2531611225 its reverse (5221161352), we get a palindrome (7752772577).

The spelling of 2531611225 in words is "two billion, five hundred thirty-one million, six hundred eleven thousand, two hundred twenty-five".