25265666402239 has 2 divisors, whose sum is σ = 25265666402240. Its totient is φ = 25265666402238.

The previous prime is 25265666402237. The next prime is 25265666402363. The reversal of 25265666402239 is 93220466656252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25265666402239 - 2¹ = 25265666402237 is a prime.

It is a super-2 number, since 2×25265666402239² (a number of 28 digits) contains 22 as substring.

Together with 25265666402237, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25265666402237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12632833201119 + 12632833201120.

It is an arithmetic number, because the mean of its divisors is an integer number (12632833201120).

Almost surely, 2^{25265666402239} is an apocalyptic number.

25265666402239 is a deficient number, since it is larger than the sum of its proper divisors (1).

25265666402239 is an equidigital number, since it uses as much as digits as its factorization.

25265666402239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55987200, while the sum is 58.

The spelling of 25265666402239 in words is "twenty-five trillion, two hundred sixty-five billion, six hundred sixty-six million, four hundred two thousand, two hundred thirty-nine".