25231442430 has 16 divisors (see below), whose sum is σ = 60555461904. Its totient is φ = 6728384640.

The previous prime is 25231442419. The next prime is 25231442473. The reversal of 25231442430 is 3424413252.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 841048081 = 25231442430 / (2 + 5 + 2 + 3 + 1 + 4 + 4 + 2 + 4 + 3 + 0).

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 7 ways as a sum of consecutive naturals, for example, 420524011 + ... + 420524070.

It is an arithmetic number, because the mean of its divisors is an integer number (3784716369).

Almost surely, 2^25231442430 is an apocalyptic number.

25231442430 is an abundant number, since it is smaller than the sum of its proper divisors (35324019474).

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

25231442430 is a wasteful number, since it uses less digits than its factorization.

25231442430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841048091.

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

Adding to 25231442430 its reverse (3424413252), we get a palindrome (28655855682).

The spelling of 25231442430 in words is "twenty-five billion, two hundred thirty-one million, four hundred forty-two thousand, four hundred thirty".