25405135255979 has 2 divisors, whose sum is σ = 25405135255980. Its totient is φ = 25405135255978.

The previous prime is 25405135255961. The next prime is 25405135256063. The reversal of 25405135255979 is 97955253150452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25405135255979 - 2¹⁶ = 25405135190443 is a prime.

It is not a weakly prime, because it can be changed into another prime (25405135255949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12702567627989 + 12702567627990.

It is an arithmetic number, because the mean of its divisors is an integer number (12702567627990).

Almost surely, 2^{25405135255979} is an apocalyptic number.

25405135255979 is a deficient number, since it is larger than the sum of its proper divisors (1).

25405135255979 is an equidigital number, since it uses as much as digits as its factorization.

25405135255979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85050000, while the sum is 62.

The spelling of 25405135255979 in words is "twenty-five trillion, four hundred five billion, one hundred thirty-five million, two hundred fifty-five thousand, nine hundred seventy-nine".