25632945643 has 2 divisors, whose sum is σ = 25632945644. Its totient is φ = 25632945642.

The previous prime is 25632945629. The next prime is 25632945647. The reversal of 25632945643 is 34654923652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25632945643 - 2⁹ = 25632945131 is a prime.

It is not a weakly prime, because it can be changed into another prime (25632945647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12816472821 + 12816472822.

It is an arithmetic number, because the mean of its divisors is an integer number (12816472822).

Almost surely, 2^25632945643 is an apocalyptic number.

25632945643 is a deficient number, since it is larger than the sum of its proper divisors (1).

25632945643 is an equidigital number, since it uses as much as digits as its factorization.

25632945643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4665600, while the sum is 49.

The spelling of 25632945643 in words is "twenty-five billion, six hundred thirty-two million, nine hundred forty-five thousand, six hundred forty-three".