25212044000 has 288 divisors, whose sum is σ = 73345341888. Its totient is φ = 8460672000.

The previous prime is 25212043999. The next prime is 25212044003. The reversal of 25212044000 is 44021252.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25212044003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6289997 + ... + 6294003.

It is an arithmetic number, because the mean of its divisors is an integer number (254671326).

Almost surely, 2^25212044000 is an apocalyptic number.

25212044000 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 25212044000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36672670944).

25212044000 is an abundant number, since it is smaller than the sum of its proper divisors (48133297888).

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

25212044000 is a wasteful number, since it uses less digits than its factorization.

25212044000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4067 (or 4038 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 25212044000 its reverse (44021252), we get a palindrome (25256065252).

The spelling of 25212044000 in words is "twenty-five billion, two hundred twelve million, forty-four thousand".