25305144064 has 36 divisors (see below), whose sum is σ = 50958502056. Its totient is φ = 12540588032.

The previous prime is 25305144043. The next prime is 25305144071. The reversal of 25305144064 is 46044150352.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408454 + ... + 466309.

It is an arithmetic number, because the mean of its divisors is an integer number (1415513946).

Almost surely, 2^25305144064 is an apocalyptic number.

It is an amenable number.

25305144064 is an abundant number, since it is smaller than the sum of its proper divisors (25653357992).

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

25305144064 is an equidigital number, since it uses as much as digits as its factorization.

25305144064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874892 (or 874878 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 25305144064 in words is "twenty-five billion, three hundred five million, one hundred forty-four thousand, sixty-four".