25443251130 has 128 divisors (see below), whose sum is σ = 70392913920. Its totient is φ = 5825064960.

The previous prime is 25443251083. The next prime is 25443251131. The reversal of 25443251130 is 3115234452.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (25443251131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 578394 + ... + 620826.

It is an arithmetic number, because the mean of its divisors is an integer number (549944640).

Almost surely, 2^25443251130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25443251130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35196456960).

25443251130 is an abundant number, since it is smaller than the sum of its proper divisors (44949662790).

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

25443251130 is a wasteful number, since it uses less digits than its factorization.

25443251130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42556.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 25443251130 its reverse (3115234452), we get a palindrome (28558485582).

The spelling of 25443251130 in words is "twenty-five billion, four hundred forty-three million, two hundred fifty-one thousand, one hundred thirty".