25145443 has 2 divisors, whose sum is σ = 25145444. Its totient is φ = 25145442.

The previous prime is 25145401. The next prime is 25145453. The reversal of 25145443 is 34454152.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25145443 is a prime.

It is not a weakly prime, because it can be changed into another prime (25145453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12572721 + 12572722.

It is an arithmetic number, because the mean of its divisors is an integer number (12572722).

Almost surely, 2^25145443 is an apocalyptic number.

25145443 is a deficient number, since it is larger than the sum of its proper divisors (1).

25145443 is an equidigital number, since it uses as much as digits as its factorization.

25145443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 28.

The square root of 25145443 is about 5014.5232076440. The cubic root of 25145443 is about 292.9677149562.

Adding to 25145443 its reverse (34454152), we get a palindrome (59599595).

The spelling of 25145443 in words is "twenty-five million, one hundred forty-five thousand, four hundred forty-three".