25205065024 has 56 divisors (see below), whose sum is σ = 50734732160. Its totient is φ = 12422052864.

The previous prime is 25205065021. The next prime is 25205065037. The reversal of 25205065024 is 42056050252.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25205065021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3247132 + ... + 3254884.

It is an arithmetic number, because the mean of its divisors is an integer number (905977360).

Almost surely, 2^25205065024 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 25205065024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25367366080).

25205065024 is an abundant number, since it is smaller than the sum of its proper divisors (25529667136).

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

25205065024 is an equidigital number, since it uses as much as digits as its factorization.

25205065024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8487 (or 8477 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 25205065024 in words is "twenty-five billion, two hundred five million, sixty-five thousand, twenty-four".