25671653018243 has 2 divisors, whose sum is σ = 25671653018244. Its totient is φ = 25671653018242.

The previous prime is 25671653018237. The next prime is 25671653018303. The reversal of 25671653018243 is 34281035617652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25671653018243 - 2²⁸ = 25671384582787 is a prime.

It is not a weakly prime, because it can be changed into another prime (25671653017243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12835826509121 + 12835826509122.

It is an arithmetic number, because the mean of its divisors is an integer number (12835826509122).

Almost surely, 2^{25671653018243} is an apocalyptic number.

25671653018243 is a deficient number, since it is larger than the sum of its proper divisors (1).

25671653018243 is an equidigital number, since it uses as much as digits as its factorization.

25671653018243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 25671653018243 in words is "twenty-five trillion, six hundred seventy-one billion, six hundred fifty-three million, eighteen thousand, two hundred forty-three".