25370002543 has 2 divisors, whose sum is σ = 25370002544. Its totient is φ = 25370002542.

The previous prime is 25370002531. The next prime is 25370002571. The reversal of 25370002543 is 34520007352.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25370002543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25370002573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12685001271 + 12685001272.

It is an arithmetic number, because the mean of its divisors is an integer number (12685001272).

Almost surely, 2^25370002543 is an apocalyptic number.

25370002543 is a deficient number, since it is larger than the sum of its proper divisors (1).

25370002543 is an equidigital number, since it uses as much as digits as its factorization.

25370002543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 31.

Adding to 25370002543 its reverse (34520007352), we get a palindrome (59890009895).

The spelling of 25370002543 in words is "twenty-five billion, three hundred seventy million, two thousand, five hundred forty-three".