25012447 has 2 divisors, whose sum is σ = 25012448. Its totient is φ = 25012446.

The previous prime is 25012441. The next prime is 25012451. The reversal of 25012447 is 74421052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25012447 - 2¹⁹ = 24488159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25012441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12506223 + 12506224.

It is an arithmetic number, because the mean of its divisors is an integer number (12506224).

Almost surely, 2^25012447 is an apocalyptic number.

25012447 is a deficient number, since it is larger than the sum of its proper divisors (1).

25012447 is an equidigital number, since it uses as much as digits as its factorization.

25012447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 25012447 is about 5001.2445451107. The cubic root of 25012447 is about 292.4502927684.

Adding to 25012447 its reverse (74421052), we get a palindrome (99433499).

The spelling of 25012447 in words is "twenty-five million, twelve thousand, four hundred forty-seven".