25672447543 has 2 divisors, whose sum is σ = 25672447544. Its totient is φ = 25672447542.

The previous prime is 25672447523. The next prime is 25672447571. The reversal of 25672447543 is 34574427652.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25672447543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25672447523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12836223771 + 12836223772.

It is an arithmetic number, because the mean of its divisors is an integer number (12836223772).

Almost surely, 2^25672447543 is an apocalyptic number.

25672447543 is a deficient number, since it is larger than the sum of its proper divisors (1).

25672447543 is an equidigital number, since it uses as much as digits as its factorization.

25672447543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5644800, while the sum is 49.

The spelling of 25672447543 in words is "twenty-five billion, six hundred seventy-two million, four hundred forty-seven thousand, five hundred forty-three".