25121340200 has 288 divisors, whose sum is σ = 68779704960. Its totient is φ = 8457523200.

The previous prime is 25121340191. The next prime is 25121340269. The reversal of 25121340200 is 204312152.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 37327064 + ... + 37327736.

It is an arithmetic number, because the mean of its divisors is an integer number (238818420).

Almost surely, 2^25121340200 is an apocalyptic number.

25121340200 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 25121340200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34389852480).

25121340200 is an abundant number, since it is smaller than the sum of its proper divisors (43658364760).

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

25121340200 is a wasteful number, since it uses less digits than its factorization.

25121340200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 757 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 25121340200 its reverse (204312152), we get a palindrome (25325652352).

The spelling of 25121340200 in words is "twenty-five billion, one hundred twenty-one million, three hundred forty thousand, two hundred".