25543120037 has 2 divisors, whose sum is σ = 25543120038. Its totient is φ = 25543120036.

The previous prime is 25543120027. The next prime is 25543120081. The reversal of 25543120037 is 73002134552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24847532161 + 695587876 = 157631^2 + 26374^2 .

It is a cyclic number.

It is not a de Polignac number, because 25543120037 - 2⁸ = 25543119781 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25543119985 and 25543120012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25543120027) 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 as a sum of consecutive naturals, namely, 12771560018 + 12771560019.

It is an arithmetic number, because the mean of its divisors is an integer number (12771560019).

Almost surely, 2^25543120037 is an apocalyptic number.

It is an amenable number.

25543120037 is a deficient number, since it is larger than the sum of its proper divisors (1).

25543120037 is an equidigital number, since it uses as much as digits as its factorization.

25543120037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 32.

Adding to 25543120037 its reverse (73002134552), we get a palindrome (98545254589).

The spelling of 25543120037 in words is "twenty-five billion, five hundred forty-three million, one hundred twenty thousand, thirty-seven".