25215132211 has 2 divisors, whose sum is σ = 25215132212. Its totient is φ = 25215132210.

The previous prime is 25215132169. The next prime is 25215132259. The reversal of 25215132211 is 11223151252.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25215132211 is a prime.

It is not a weakly prime, because it can be changed into another prime (25215132911) 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, 12607566105 + 12607566106.

It is an arithmetic number, because the mean of its divisors is an integer number (12607566106).

Almost surely, 2^25215132211 is an apocalyptic number.

25215132211 is a deficient number, since it is larger than the sum of its proper divisors (1).

25215132211 is an equidigital number, since it uses as much as digits as its factorization.

25215132211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 25.

Adding to 25215132211 its reverse (11223151252), we get a palindrome (36438283463).

The spelling of 25215132211 in words is "twenty-five billion, two hundred fifteen million, one hundred thirty-two thousand, two hundred eleven".