2540637325 has 12 divisors (see below), whose sum is σ = 3181585428. Its totient is φ = 2012384000.

The previous prime is 2540637257. The next prime is 2540637331. The reversal of 2540637325 is 5237360452.

It can be written as a sum of positive squares in 6 ways, for example, as 192071881 + 2348565444 = 13859^2 + 48462^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2540637325 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 500572 + ... + 505621.

It is an arithmetic number, because the mean of its divisors is an integer number (265132119).

Almost surely, 2^2540637325 is an apocalyptic number.

2540637325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2540637325 is a deficient number, since it is larger than the sum of its proper divisors (640948103).

2540637325 is a wasteful number, since it uses less digits than its factorization.

2540637325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006304 (or 1006299 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 37.

The square root of 2540637325 is about 50404.7351446270. The cubic root of 2540637325 is about 1364.5230972744.

Adding to 2540637325 its reverse (5237360452), we get a palindrome (7777997777).

The spelling of 2540637325 in words is "two billion, five hundred forty million, six hundred thirty-seven thousand, three hundred twenty-five".