25405135256063 has 2 divisors, whose sum is σ = 25405135256064. Its totient is φ = 25405135256062.

The previous prime is 25405135255979. The next prime is 25405135256107. The reversal of 25405135256063 is 36065253150452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25405135256063 - 2³⁴ = 25387955386879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25405135255999 and 25405135256017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27405135256063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12702567628031 + 12702567628032.

It is an arithmetic number, because the mean of its divisors is an integer number (12702567628032).

Almost surely, 2^{25405135256063} is an apocalyptic number.

25405135256063 is a deficient number, since it is larger than the sum of its proper divisors (1).

25405135256063 is an equidigital number, since it uses as much as digits as its factorization.

25405135256063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240000, while the sum is 47.

The spelling of 25405135256063 in words is "twenty-five trillion, four hundred five billion, one hundred thirty-five million, two hundred fifty-six thousand, sixty-three".