23211323525 has 48 divisors (see below), whose sum is σ = 31368398544. Its totient is φ = 16936058880.

The previous prime is 23211323491. The next prime is 23211323539. The reversal of 23211323525 is 52532311232.

It can be written as a sum of positive squares in 24 ways, for example, as 23184934756 + 26388769 = 152266^2 + 5137^2 .

It is not a de Polignac number, because 23211323525 - 2¹⁰ = 23211322501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9846647 + ... + 9849003.

It is an arithmetic number, because the mean of its divisors is an integer number (653508303).

Almost surely, 2^23211323525 is an apocalyptic number.

23211323525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23211323525 is a deficient number, since it is larger than the sum of its proper divisors (8157075019).

23211323525 is a wasteful number, since it uses less digits than its factorization.

23211323525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2730 (or 2725 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

Adding to 23211323525 its reverse (52532311232), we get a palindrome (75743634757).

The spelling of 23211323525 in words is "twenty-three billion, two hundred eleven million, three hundred twenty-three thousand, five hundred twenty-five".