25221422147 has 2 divisors, whose sum is σ = 25221422148. Its totient is φ = 25221422146.

The previous prime is 25221422101. The next prime is 25221422159. The reversal of 25221422147 is 74122412252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25221422147 - 2¹² = 25221418051 is a prime.

It is a super-2 number, since 2×25221422147² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25221425147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12610711073 + 12610711074.

It is an arithmetic number, because the mean of its divisors is an integer number (12610711074).

Almost surely, 2^25221422147 is an apocalyptic number.

25221422147 is a deficient number, since it is larger than the sum of its proper divisors (1).

25221422147 is an equidigital number, since it uses as much as digits as its factorization.

25221422147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17920, while the sum is 32.

Adding to 25221422147 its reverse (74122412252), we get a palindrome (99343834399).

The spelling of 25221422147 in words is "twenty-five billion, two hundred twenty-one million, four hundred twenty-two thousand, one hundred forty-seven".