25634063443 has 2 divisors, whose sum is σ = 25634063444. Its totient is φ = 25634063442.

The previous prime is 25634063423. The next prime is 25634063449. The reversal of 25634063443 is 34436043652.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25634063443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25634063396 and 25634063405.

It is not a weakly prime, because it can be changed into another prime (25634063449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12817031721 + 12817031722.

It is an arithmetic number, because the mean of its divisors is an integer number (12817031722).

Almost surely, 2^25634063443 is an apocalyptic number.

25634063443 is a deficient number, since it is larger than the sum of its proper divisors (1).

25634063443 is an equidigital number, since it uses as much as digits as its factorization.

25634063443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 40.

The spelling of 25634063443 in words is "twenty-five billion, six hundred thirty-four million, sixty-three thousand, four hundred forty-three".