25243225000 has 96 divisors (see below), whose sum is σ = 67611922560. Its totient is φ = 8654760000.

The previous prime is 25243224997. The next prime is 25243225009. The reversal of 25243225000 is 52234252.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (25243225009) 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, 102877 + ... + 247123.

It is an arithmetic number, because the mean of its divisors is an integer number (704290860).

Almost surely, 2^25243225000 is an apocalyptic number.

25243225000 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 25243225000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33805961280).

25243225000 is an abundant number, since it is smaller than the sum of its proper divisors (42368697560).

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

25243225000 is an equidigital number, since it uses as much as digits as its factorization.

25243225000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144285 (or 144261 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

Adding to 25243225000 its reverse (52234252), we get a palindrome (25295459252).

The spelling of 25243225000 in words is "twenty-five billion, two hundred forty-three million, two hundred twenty-five thousand".