25404403011321 has 8 divisors (see below), whose sum is σ = 33874040813344. Its totient is φ = 16935516941760.

The previous prime is 25404403011271. The next prime is 25404403011331. The reversal of 25404403011321 is 12311030440452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25404403011321 - 2¹¹ = 25404403009273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25404403011331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187854256 + ... + 187989441.

It is an arithmetic number, because the mean of its divisors is an integer number (4234255101668).

Almost surely, 2^{25404403011321} is an apocalyptic number.

It is an amenable number.

25404403011321 is a deficient number, since it is larger than the sum of its proper divisors (8469637802023).

25404403011321 is a wasteful number, since it uses less digits than its factorization.

25404403011321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375866231.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 25404403011321 its reverse (12311030440452), we get a palindrome (37715433451773).

The spelling of 25404403011321 in words is "twenty-five trillion, four hundred four billion, four hundred three million, eleven thousand, three hundred twenty-one".