25226347 has 2 divisors, whose sum is σ = 25226348. Its totient is φ = 25226346.

The previous prime is 25226329. The next prime is 25226387. The reversal of 25226347 is 74362252.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25226347 is a prime.

It is not a weakly prime, because it can be changed into another prime (25226387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12613173 + 12613174.

It is an arithmetic number, because the mean of its divisors is an integer number (12613174).

Almost surely, 2^25226347 is an apocalyptic number.

25226347 is a deficient number, since it is larger than the sum of its proper divisors (1).

25226347 is an equidigital number, since it uses as much as digits as its factorization.

25226347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 31.

The square root of 25226347 is about 5022.5836976600. The cubic root of 25226347 is about 293.2815807746.

Adding to 25226347 its reverse (74362252), we get a palindrome (99588599).

The spelling of 25226347 in words is "twenty-five million, two hundred twenty-six thousand, three hundred forty-seven".