25231512211 has 2 divisors, whose sum is σ = 25231512212. Its totient is φ = 25231512210.

The previous prime is 25231512127. The next prime is 25231512283. The reversal of 25231512211 is 11221513252.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25231512211 - 2¹⁵ = 25231479443 is a prime.

It is not a weakly prime, because it can be changed into another prime (25231512511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12615756105 + 12615756106.

It is an arithmetic number, because the mean of its divisors is an integer number (12615756106).

Almost surely, 2^25231512211 is an apocalyptic number.

25231512211 is a deficient number, since it is larger than the sum of its proper divisors (1).

25231512211 is an equidigital number, since it uses as much as digits as its factorization.

25231512211 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.

The spelling of 25231512211 in words is "twenty-five billion, two hundred thirty-one million, five hundred twelve thousand, two hundred eleven".