25224116321 has 4 divisors (see below), whose sum is σ = 25224434352. Its totient is φ = 25223798292.

The previous prime is 25224116287. The next prime is 25224116327. The reversal of 25224116321 is 12361142252.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25224116321 - 2¹⁰ = 25224115297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25224116327) 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, 67730 + ... + 234596.

It is an arithmetic number, because the mean of its divisors is an integer number (6306108588).

Almost surely, 2^25224116321 is an apocalyptic number.

It is an amenable number.

25224116321 is a deficient number, since it is larger than the sum of its proper divisors (318031).

25224116321 is a wasteful number, since it uses less digits than its factorization.

25224116321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318030.

The product of its digits is 5760, while the sum is 29.

Adding to 25224116321 its reverse (12361142252), we get a palindrome (37585258573).

The spelling of 25224116321 in words is "twenty-five billion, two hundred twenty-four million, one hundred sixteen thousand, three hundred twenty-one".