25771245016361 has 8 divisors (see below), whose sum is σ = 28039768567944. Its totient is φ = 23543595763200.

The previous prime is 25771245016339. The next prime is 25771245016459. The reversal of 25771245016361 is 16361054217752.

It can be written as a sum of positive squares in 4 ways, for example, as 120717333136 + 25650527683225 = 347444^2 + 5064635^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25771245016361 - 2¹⁸ = 25771244754217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25771245016061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10218573290 + ... + 10218575811.

It is an arithmetic number, because the mean of its divisors is an integer number (3504971070993).

Almost surely, 2^{25771245016361} is an apocalyptic number.

It is an amenable number.

25771245016361 is a deficient number, since it is larger than the sum of its proper divisors (2268523551583).

25771245016361 is a wasteful number, since it uses less digits than its factorization.

25771245016361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20437149211.

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 25771245016361 in words is "twenty-five trillion, seven hundred seventy-one billion, two hundred forty-five million, sixteen thousand, three hundred sixty-one".