25461163104 has 192 divisors, whose sum is σ = 75919737600. Its totient is φ = 7406733312.

The previous prime is 25461163099. The next prime is 25461163127. The reversal of 25461163104 is 40136116452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17522442 + ... + 17523894.

It is an arithmetic number, because the mean of its divisors is an integer number (395415300).

Almost surely, 2^25461163104 is an apocalyptic number.

25461163104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25461163104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37959868800).

25461163104 is an abundant number, since it is smaller than the sum of its proper divisors (50458574496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25461163104 is a wasteful number, since it uses less digits than its factorization.

25461163104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237 (or 2229 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 25461163104 its reverse (40136116452), we get a palindrome (65597279556).

The spelling of 25461163104 in words is "twenty-five billion, four hundred sixty-one million, one hundred sixty-three thousand, one hundred four".