11425423521 has 8 divisors (see below), whose sum is σ = 15242225344. Its totient is φ = 7612785360.

The previous prime is 11425423511. The next prime is 11425423531. The reversal of 11425423521 is 12532452411.

It is an interprime number because it is at equal distance from previous prime (11425423511) and next prime (11425423531).

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

It is not a de Polignac number, because 11425423521 - 2¹⁰ = 11425422497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11425423511) 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, 1034506 + ... + 1045491.

It is an arithmetic number, because the mean of its divisors is an integer number (1905278168).

Almost surely, 2^11425423521 is an apocalyptic number.

It is an amenable number.

11425423521 is a deficient number, since it is larger than the sum of its proper divisors (3816801823).

11425423521 is a wasteful number, since it uses less digits than its factorization.

11425423521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081831.

The product of its digits is 9600, while the sum is 30.

Adding to 11425423521 its reverse (12532452411), we get a palindrome (23957875932).

The spelling of 11425423521 in words is "eleven billion, four hundred twenty-five million, four hundred twenty-three thousand, five hundred twenty-one".