25705717541 has 16 divisors (see below), whose sum is σ = 29825049984. Its totient is φ = 21699062784.

The previous prime is 25705717523. The next prime is 25705717577. The reversal of 25705717541 is 14571750752.

It is not a de Polignac number, because 25705717541 - 2¹⁸ = 25705455397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25705717492 and 25705717501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25705717501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306530 + ... + 381276.

It is an arithmetic number, because the mean of its divisors is an integer number (1864065624).

Almost surely, 2^25705717541 is an apocalyptic number.

It is an amenable number.

25705717541 is a deficient number, since it is larger than the sum of its proper divisors (4119332443).

25705717541 is an equidigital number, since it uses as much as digits as its factorization.

25705717541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75500.

The product of its (nonzero) digits is 343000, while the sum is 44.

The spelling of 25705717541 in words is "twenty-five billion, seven hundred five million, seven hundred seventeen thousand, five hundred forty-one".