25245344000 has 144 divisors (see below), whose sum is σ = 63102866736. Its totient is φ = 10063872000.

The previous prime is 25245343999. The next prime is 25245344009. The reversal of 25245344000 is 44354252.

It can be written as a sum of positive squares in 8 ways, for example, as 9191440384 + 16053903616 = 95872^2 + 126704^2 .

It is not an unprimeable number, because it can be changed into a prime (25245344009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10782830 + ... + 10785170.

Almost surely, 2^25245344000 is an apocalyptic number.

25245344000 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 25245344000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31551433368).

25245344000 is an abundant number, since it is smaller than the sum of its proper divisors (37857522736).

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

25245344000 is an equidigital number, since it uses as much as digits as its factorization.

25245344000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709 (or 2685 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 29.

Adding to 25245344000 its reverse (44354252), we get a palindrome (25289698252).

The spelling of 25245344000 in words is "twenty-five billion, two hundred forty-five million, three hundred forty-four thousand".