25231443403 has 8 divisors (see below), whose sum is σ = 25581933200. Its totient is φ = 24881084928.

The previous prime is 25231443343. The next prime is 25231443431. The reversal of 25231443403 is 30434413252.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25231443403 - 2¹³ = 25231435211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25231443493) 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, 391963 + ... + 451771.

It is an arithmetic number, because the mean of its divisors is an integer number (3197741650).

Almost surely, 2^25231443403 is an apocalyptic number.

25231443403 is a deficient number, since it is larger than the sum of its proper divisors (350489797).

25231443403 is an equidigital number, since it uses as much as digits as its factorization.

25231443403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65661.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 25231443403 its reverse (30434413252), we get a palindrome (55665856655).

The spelling of 25231443403 in words is "twenty-five billion, two hundred thirty-one million, four hundred forty-three thousand, four hundred three".