25351300000 has 144 divisors (see below), whose sum is σ = 67186184184. Its totient is φ = 9360000000.

The previous prime is 25351299983. The next prime is 25351300003. The reversal of 25351300000 is 315352.

It can be written as a sum of positive squares in 12 ways, for example, as 16142210704 + 9209089296 = 127052^2 + 95964^2 .

It is not an unprimeable number, because it can be changed into a prime (25351300003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1290250 + ... + 1309750.

Almost surely, 2^25351300000 is an apocalyptic number.

25351300000 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 25351300000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33593092092).

25351300000 is an abundant number, since it is smaller than the sum of its proper divisors (41834884184).

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

25351300000 is an equidigital number, since it uses as much as digits as its factorization.

25351300000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19549 (or 19521 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 19.

Adding to 25351300000 its reverse (315352), we get a palindrome (25351615352).

The spelling of 25351300000 in words is "twenty-five billion, three hundred fifty-one million, three hundred thousand".