25561025850575 has 12 divisors (see below), whose sum is σ = 33073744753488. Its totient is φ = 19559741520000.

The previous prime is 25561025850533. The next prime is 25561025850599. The reversal of 25561025850575 is 57505852016552.

It is not a de Polignac number, because 25561025850575 - 2⁸ = 25561025850319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25561025850575.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22226978426 + ... + 22226979575.

It is an arithmetic number, because the mean of its divisors is an integer number (2756145396124).

Almost surely, 2^{25561025850575} is an apocalyptic number.

25561025850575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25561025850575 is a deficient number, since it is larger than the sum of its proper divisors (7512718902913).

25561025850575 is a wasteful number, since it uses less digits than its factorization.

25561025850575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44453958034 (or 44453958029 counting only the distinct ones).

The product of its (nonzero) digits is 21000000, while the sum is 56.

The spelling of 25561025850575 in words is "twenty-five trillion, five hundred sixty-one billion, twenty-five million, eight hundred fifty thousand, five hundred seventy-five".