25553043231101 has 2 divisors, whose sum is σ = 25553043231102. Its totient is φ = 25553043231100.

The previous prime is 25553043231083. The next prime is 25553043231151. The reversal of 25553043231101 is 10113234035552.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18084989496025 + 7468053735076 = 4252645^2 + 2732774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25553043231101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25553043231151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12776521615550 + 12776521615551.

It is an arithmetic number, because the mean of its divisors is an integer number (12776521615551).

Almost surely, 2^{25553043231101} is an apocalyptic number.

It is an amenable number.

25553043231101 is a deficient number, since it is larger than the sum of its proper divisors (1).

25553043231101 is an equidigital number, since it uses as much as digits as its factorization.

25553043231101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 35.

Adding to 25553043231101 its reverse (10113234035552), we get a palindrome (35666277266653).

The spelling of 25553043231101 in words is "twenty-five trillion, five hundred fifty-three billion, forty-three million, two hundred thirty-one thousand, one hundred one".