25212215235541 has 2 divisors, whose sum is σ = 25212215235542. Its totient is φ = 25212215235540.

The previous prime is 25212215235503. The next prime is 25212215235547. The reversal of 25212215235541 is 14553251221252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24478201527025 + 734013708516 = 4947545^2 + 856746^2 .

It is a cyclic number.

It is not a de Polignac number, because 25212215235541 - 2¹⁹ = 25212214711253 is a prime.

It is a super-3 number, since 3×25212215235541³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25212215235494 and 25212215235503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25212215235547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12606107617770 + 12606107617771.

It is an arithmetic number, because the mean of its divisors is an integer number (12606107617771).

Almost surely, 2^{25212215235541} is an apocalyptic number.

It is an amenable number.

25212215235541 is a deficient number, since it is larger than the sum of its proper divisors (1).

25212215235541 is an equidigital number, since it uses as much as digits as its factorization.

25212215235541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 240000, while the sum is 40.

Adding to 25212215235541 its reverse (14553251221252), we get a palindrome (39765466456793).

The spelling of 25212215235541 in words is "twenty-five trillion, two hundred twelve billion, two hundred fifteen million, two hundred thirty-five thousand, five hundred forty-one".