25503442023 has 4 divisors (see below), whose sum is σ = 34004589368. Its totient is φ = 17002294680.

The previous prime is 25503441949. The next prime is 25503442043. The reversal of 25503442023 is 32024430552.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25503442023 - 2¹⁰ = 25503440999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25503442043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4250573668 + ... + 4250573673.

It is an arithmetic number, because the mean of its divisors is an integer number (8501147342).

Almost surely, 2^25503442023 is an apocalyptic number.

25503442023 is a deficient number, since it is larger than the sum of its proper divisors (8501147345).

25503442023 is an equidigital number, since it uses as much as digits as its factorization.

25503442023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8501147344.

The product of its (nonzero) digits is 28800, while the sum is 30.

Adding to 25503442023 its reverse (32024430552), we get a palindrome (57527872575).

The spelling of 25503442023 in words is "twenty-five billion, five hundred three million, four hundred forty-two thousand, twenty-three".