25161808896 has 660 divisors, whose sum is σ = 90130327056. Its totient is φ = 6967296000.

The previous prime is 25161808891. The next prime is 25161808901. The reversal of 25161808896 is 69880816152.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25161808891) and next prime (25161808901).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25161808891) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 166634421 + ... + 166634571.

Almost surely, 2^25161808896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25161808896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45065163528).

25161808896 is an abundant number, since it is smaller than the sum of its proper divisors (64968518160).

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

25161808896 is a wasteful number, since it uses less digits than its factorization.

25161808896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The spelling of 25161808896 in words is "twenty-five billion, one hundred sixty-one million, eight hundred eight thousand, eight hundred ninety-six".