25845881361 has 16 divisors (see below), whose sum is σ = 34940231040. Its totient is φ = 16992449280.

The previous prime is 25845881273. The next prime is 25845881407. The reversal of 25845881361 is 16318854852.

It is not a de Polignac number, because 25845881361 - 2¹³ = 25845873169 is a prime.

It is a super-3 number, since 3×25845881361³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (25845886361) 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, 99066 + ... + 248003.

It is an arithmetic number, because the mean of its divisors is an integer number (2183764440).

Almost surely, 2^25845881361 is an apocalyptic number.

It is an amenable number.

25845881361 is a deficient number, since it is larger than the sum of its proper divisors (9094349679).

25845881361 is a wasteful number, since it uses less digits than its factorization.

25845881361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347416.

The product of its digits is 1843200, while the sum is 51.

The spelling of 25845881361 in words is "twenty-five billion, eight hundred forty-five million, eight hundred eighty-one thousand, three hundred sixty-one".