25403313043 has 2 divisors, whose sum is σ = 25403313044. Its totient is φ = 25403313042.

The previous prime is 25403313037. The next prime is 25403313053. The reversal of 25403313043 is 34031330452.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25403313043 is a prime.

It is not a weakly prime, because it can be changed into another prime (25403313053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12701656521 + 12701656522.

It is an arithmetic number, because the mean of its divisors is an integer number (12701656522).

Almost surely, 2^25403313043 is an apocalyptic number.

25403313043 is a deficient number, since it is larger than the sum of its proper divisors (1).

25403313043 is an equidigital number, since it uses as much as digits as its factorization.

25403313043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 28.

Adding to 25403313043 its reverse (34031330452), we get a palindrome (59434643495).

The spelling of 25403313043 in words is "twenty-five billion, four hundred three million, three hundred thirteen thousand, forty-three".