25804517786467 has 32 divisors (see below), whose sum is σ = 29800670412800. Its totient is φ = 21886753609728.

The previous prime is 25804517786461. The next prime is 25804517786471. The reversal of 25804517786467 is 76468771540852.

It is not a de Polignac number, because 25804517786467 - 2⁷ = 25804517786339 is a prime.

It is a super-2 number, since 2×25804517786467² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25804517786396 and 25804517786405.

It is not an unprimeable number, because it can be changed into a prime (25804517786461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1624041259 + ... + 1624057147.

It is an arithmetic number, because the mean of its divisors is an integer number (931270950400).

Almost surely, 2^{25804517786467} is an apocalyptic number.

25804517786467 is a deficient number, since it is larger than the sum of its proper divisors (3996152626333).

25804517786467 is a wasteful number, since it uses less digits than its factorization.

25804517786467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20675.

The product of its (nonzero) digits is 632217600, while the sum is 70.

The spelling of 25804517786467 in words is "twenty-five trillion, eight hundred four billion, five hundred seventeen million, seven hundred eighty-six thousand, four hundred sixty-seven".