25443103540 has 12 divisors (see below), whose sum is σ = 53430517476. Its totient is φ = 10177241408.

The previous prime is 25443103531. The next prime is 25443103549. The reversal of 25443103540 is 4530134452.

It is an interprime number because it is at equal distance from previous prime (25443103531) and next prime (25443103549).

It can be written as a sum of positive squares in 2 ways, for example, as 2917296144 + 22525807396 = 54012^2 + 150086^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25443103549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 636077569 + ... + 636077608.

It is an arithmetic number, because the mean of its divisors is an integer number (4452543123).

Almost surely, 2^25443103540 is an apocalyptic number.

25443103540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25443103540 is an abundant number, since it is smaller than the sum of its proper divisors (27987413936).

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

25443103540 is a wasteful number, since it uses less digits than its factorization.

25443103540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272155186 (or 1272155184 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 25443103540 its reverse (4530134452), we get a palindrome (29973237992).

The spelling of 25443103540 in words is "twenty-five billion, four hundred forty-three million, one hundred three thousand, five hundred forty".