25310250000 has 420 divisors, whose sum is σ = 101252453952. Its totient is φ = 5781600000.

The previous prime is 25310249963. The next prime is 25310250067. The reversal of 25310250000 is 5201352.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (420).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 15749197 + ... + 15750803.

Almost surely, 2^25310250000 is an apocalyptic number.

25310250000 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 25310250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50626226976).

25310250000 is an abundant number, since it is smaller than the sum of its proper divisors (75942203952).

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

25310250000 is an equidigital number, since it uses as much as digits as its factorization.

25310250000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658 (or 1624 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

Adding to 25310250000 its reverse (5201352), we get a palindrome (25315451352).

The spelling of 25310250000 in words is "twenty-five billion, three hundred ten million, two hundred fifty thousand".