25461440404 has 24 divisors (see below), whose sum is σ = 46501318080. Its totient is φ = 12175504704.

The previous prime is 25461440401. The next prime is 25461440419. The reversal of 25461440404 is 40404416452.

It is a self number, because there is not a number n which added to its sum of digits gives 25461440404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25461440401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 853167 + ... + 882505.

It is an arithmetic number, because the mean of its divisors is an integer number (1937554920).

Almost surely, 2^25461440404 is an apocalyptic number.

It is an amenable number.

25461440404 is a deficient number, since it is larger than the sum of its proper divisors (21039877676).

25461440404 is a wasteful number, since it uses less digits than its factorization.

25461440404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38799 (or 38797 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 34.

Adding to 25461440404 its reverse (40404416452), we get a palindrome (65865856856).

The spelling of 25461440404 in words is "twenty-five billion, four hundred sixty-one million, four hundred forty thousand, four hundred four".