2531243025 has 72 divisors (see below), whose sum is σ = 4606967040. Its totient is φ = 1328382720.

The previous prime is 2531243021. The next prime is 2531243041. The reversal of 2531243025 is 5203421352.

It is a happy number.

It is not a de Polignac number, because 2531243025 - 2² = 2531243021 is a prime.

It is a super-2 number, since 2×2531243025² = 12814382503222301250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2531243025.

It is not an unprimeable number, because it can be changed into a prime (2531243021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5538597 + ... + 5539053.

Almost surely, 2^2531243025 is an apocalyptic number.

2531243025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2531243025 is a deficient number, since it is larger than the sum of its proper divisors (2075724015).

2531243025 is a wasteful number, since it uses less digits than its factorization.

2531243025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 2531243025 is about 50311.4601755902. The cubic root of 2531243025 is about 1362.8391928288.

Adding to 2531243025 its reverse (5203421352), we get a palindrome (7734664377).

The spelling of 2531243025 in words is "two billion, five hundred thirty-one million, two hundred forty-three thousand, twenty-five".