25161065160 has 256 divisors, whose sum is σ = 94507776000. Its totient is φ = 5206118400.

The previous prime is 25161065147. The next prime is 25161065213. The reversal of 25161065160 is 6156016152.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2221191 + ... + 2232489.

It is an arithmetic number, because the mean of its divisors is an integer number (369171000).

Almost surely, 2^25161065160 is an apocalyptic number.

25161065160 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 25161065160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47253888000).

25161065160 is an abundant number, since it is smaller than the sum of its proper divisors (69346710840).

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

25161065160 is a wasteful number, since it uses less digits than its factorization.

25161065160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11572 (or 11568 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The spelling of 25161065160 in words is "twenty-five billion, one hundred sixty-one million, sixty-five thousand, one hundred sixty".