25530343230 has 128 divisors (see below), whose sum is σ = 70857566208. Its totient is φ = 5766469632.

The previous prime is 25530343213. The next prime is 25530343231. The reversal of 25530343230 is 3234303552.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25530343231) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13344754 + ... + 13346666.

It is an arithmetic number, because the mean of its divisors is an integer number (553574736).

Almost surely, 2^25530343230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25530343230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35428783104).

25530343230 is an abundant number, since it is smaller than the sum of its proper divisors (45327222978).

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

25530343230 is a wasteful number, since it uses less digits than its factorization.

25530343230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650.

The product of its (nonzero) digits is 32400, while the sum is 30.

Adding to 25530343230 its reverse (3234303552), we get a palindrome (28764646782).

The spelling of 25530343230 in words is "twenty-five billion, five hundred thirty million, three hundred forty-three thousand, two hundred thirty".