25223327430 has 128 divisors (see below), whose sum is σ = 73871474688. Its totient is φ = 5386372992.

The previous prime is 25223327429. The next prime is 25223327491. The reversal of 25223327430 is 3472332252.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25223327391 and 25223327400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 146967 + ... + 268413.

It is an arithmetic number, because the mean of its divisors is an integer number (577120896).

Almost surely, 2^25223327430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25223327430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36935737344).

25223327430 is an abundant number, since it is smaller than the sum of its proper divisors (48648147258).

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

25223327430 is a wasteful number, since it uses less digits than its factorization.

25223327430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121530.

The product of its (nonzero) digits is 60480, while the sum is 33.

Adding to 25223327430 its reverse (3472332252), we get a palindrome (28695659682).

The spelling of 25223327430 in words is "twenty-five billion, two hundred twenty-three million, three hundred twenty-seven thousand, four hundred thirty".