25213222147 has 2 divisors, whose sum is σ = 25213222148. Its totient is φ = 25213222146.

The previous prime is 25213222037. The next prime is 25213222187. The reversal of 25213222147 is 74122231252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25213222147 is a prime.

It is not a weakly prime, because it can be changed into another prime (25213222187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12606611073 + 12606611074.

It is an arithmetic number, because the mean of its divisors is an integer number (12606611074).

Almost surely, 2^25213222147 is an apocalyptic number.

25213222147 is a deficient number, since it is larger than the sum of its proper divisors (1).

25213222147 is an equidigital number, since it uses as much as digits as its factorization.

25213222147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 31.

Adding to 25213222147 its reverse (74122231252), we get a palindrome (99335453399).

The spelling of 25213222147 in words is "twenty-five billion, two hundred thirteen million, two hundred twenty-two thousand, one hundred forty-seven".