25324124430 has 128 divisors (see below), whose sum is σ = 68770944000. Its totient is φ = 5911808000.

The previous prime is 25324124429. The next prime is 25324124431. The reversal of 25324124430 is 3442142352.

It is an interprime number because it is at equal distance from previous prime (25324124429) and next prime (25324124431).

It is a super-2 number, since 2×25324124430² (a number of 22 digits) contains 22 as substring.

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 (25324124431) 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, 3834271 + ... + 3840869.

It is an arithmetic number, because the mean of its divisors is an integer number (537273000).

Almost surely, 2^25324124430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25324124430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34385472000).

25324124430 is an abundant number, since it is smaller than the sum of its proper divisors (43446819570).

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

25324124430 is a wasteful number, since it uses less digits than its factorization.

25324124430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7050.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 25324124430 its reverse (3442142352), we get a palindrome (28766266782).

The spelling of 25324124430 in words is "twenty-five billion, three hundred twenty-four million, one hundred twenty-four thousand, four hundred thirty".