25445200000 has 192 divisors, whose sum is σ = 69132450240. Its totient is φ = 9251200000.

The previous prime is 25445199979. The next prime is 25445200021. The reversal of 25445200000 is 254452.

It is an interprime number because it is at equal distance from previous prime (25445199979) and next prime (25445200021).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4397109 + ... + 4402891.

It is an arithmetic number, because the mean of its divisors is an integer number (360064845).

Almost surely, 2^25445200000 is an apocalyptic number.

25445200000 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 25445200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34566225120).

25445200000 is an abundant number, since it is smaller than the sum of its proper divisors (43687250240).

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

25445200000 is an frugal number, since it uses more digits than its factorization.

25445200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5833 (or 5801 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

Adding to 25445200000 its reverse (254452), we get a palindrome (25445454452).

25445200000 divided by its reverse (254452) gives a 5-th power (100000 = 10⁵).

It can be divided in two parts, 254 and 45200000, that added together give a palindrome (45200254).

The spelling of 25445200000 in words is "twenty-five billion, four hundred forty-five million, two hundred thousand".