25791315329577 has 24 divisors (see below), whose sum is σ = 40853981045376. Its totient is φ = 14424322247328.

The previous prime is 25791315329473. The next prime is 25791315329599. The reversal of 25791315329577 is 77592351319752.

It is not a de Polignac number, because 25791315329577 - 2¹⁰ = 25791315328553 is a prime.

It is a super-2 number, since 2×25791315329577² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25791315329177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1866494418 + ... + 1866508235.

It is an arithmetic number, because the mean of its divisors is an integer number (1702249210224).

Almost surely, 2^{25791315329577} is an apocalyptic number.

It is an amenable number.

25791315329577 is a deficient number, since it is larger than the sum of its proper divisors (15062665715799).

25791315329577 is a wasteful number, since it uses less digits than its factorization.

25791315329577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3733002717 (or 3733002710 counting only the distinct ones).

The product of its digits is 125023500, while the sum is 66.

The spelling of 25791315329577 in words is "twenty-five trillion, seven hundred ninety-one billion, three hundred fifteen million, three hundred twenty-nine thousand, five hundred seventy-seven".