25243507 has 2 divisors, whose sum is σ = 25243508. Its totient is φ = 25243506.

The previous prime is 25243481. The next prime is 25243513. The reversal of 25243507 is 70534252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25243507 - 2²³ = 16854899 is a prime.

It is not a weakly prime, because it can be changed into another prime (25243567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12621753 + 12621754.

It is an arithmetic number, because the mean of its divisors is an integer number (12621754).

Almost surely, 2^25243507 is an apocalyptic number.

25243507 is a deficient number, since it is larger than the sum of its proper divisors (1).

25243507 is an equidigital number, since it uses as much as digits as its factorization.

25243507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 25243507 is about 5024.2916913730. The cubic root of 25243507 is about 293.3480664375.

Adding to 25243507 its reverse (70534252), we get a palindrome (95777759).

The spelling of 25243507 in words is "twenty-five million, two hundred forty-three thousand, five hundred seven".