25211424247 has 2 divisors, whose sum is σ = 25211424248. Its totient is φ = 25211424246.

The previous prime is 25211424193. The next prime is 25211424283. The reversal of 25211424247 is 74242411252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25211424247 - 2²³ = 25203035639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25211424547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12605712123 + 12605712124.

It is an arithmetic number, because the mean of its divisors is an integer number (12605712124).

Almost surely, 2^25211424247 is an apocalyptic number.

25211424247 is a deficient number, since it is larger than the sum of its proper divisors (1).

25211424247 is an equidigital number, since it uses as much as digits as its factorization.

25211424247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35840, while the sum is 34.

Adding to 25211424247 its reverse (74242411252), we get a palindrome (99453835499).

The spelling of 25211424247 in words is "twenty-five billion, two hundred eleven million, four hundred twenty-four thousand, two hundred forty-seven".