25230430321 has 4 divisors (see below), whose sum is σ = 25242978544. Its totient is φ = 25217882100.

The previous prime is 25230430301. The next prime is 25230430327. The reversal of 25230430321 is 12303403252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25230430321 - 2¹⁵ = 25230397553 is a prime.

It is a super-2 number, since 2×25230430321² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25230430327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6271095 + ... + 6275116.

It is an arithmetic number, because the mean of its divisors is an integer number (6310744636).

Almost surely, 2^25230430321 is an apocalyptic number.

It is an amenable number.

25230430321 is a deficient number, since it is larger than the sum of its proper divisors (12548223).

25230430321 is a wasteful number, since it uses less digits than its factorization.

25230430321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12548222.

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 25230430321 its reverse (12303403252), we get a palindrome (37533833573).

The spelling of 25230430321 in words is "twenty-five billion, two hundred thirty million, four hundred thirty thousand, three hundred twenty-one".