25391160000 has 420 divisors, whose sum is σ = 91632124584. Its totient is φ = 6720000000.

The previous prime is 25391159977. The next prime is 25391160013. The reversal of 25391160000 is 6119352.

25391160000 is a `hidden beast` number, since 2 + 53 + 9 + 1 + 1 + 600 + 0 + 0 = 666.

It is a super-2 number, since 2×25391160000² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 90359860 + ... + 90360140.

Almost surely, 2^25391160000 is an apocalyptic number.

25391160000 is a gapful number since it is divisible by the number (20) 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 25391160000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45816062292).

25391160000 is an abundant number, since it is smaller than the sum of its proper divisors (66240964584).

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

25391160000 is a wasteful number, since it uses less digits than its factorization.

25391160000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

Adding to 25391160000 its reverse (6119352), we get a palindrome (25397279352).

The spelling of 25391160000 in words is "twenty-five billion, three hundred ninety-one million, one hundred sixty thousand".