25451347 has 2 divisors, whose sum is σ = 25451348. Its totient is φ = 25451346.

The previous prime is 25451339. The next prime is 25451353. The reversal of 25451347 is 74315452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25451347 - 2³ = 25451339 is a prime.

It is a super-2 number, since 2×25451347² = 1295542128228818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25451947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12725673 + 12725674.

It is an arithmetic number, because the mean of its divisors is an integer number (12725674).

Almost surely, 2^25451347 is an apocalyptic number.

25451347 is a deficient number, since it is larger than the sum of its proper divisors (1).

25451347 is an equidigital number, since it uses as much as digits as its factorization.

25451347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 31.

The square root of 25451347 is about 5044.9328043097. The cubic root of 25451347 is about 294.1509513745.

Adding to 25451347 its reverse (74315452), we get a palindrome (99766799).

The spelling of 25451347 in words is "twenty-five million, four hundred fifty-one thousand, three hundred forty-seven".