12265242556 has 24 divisors (see below), whose sum is σ = 24594554880. Its totient is φ = 5242803312.

The previous prime is 12265242547. The next prime is 12265242599. The reversal of 12265242556 is 65524256221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 561136 + ... + 582583.

It is an arithmetic number, because the mean of its divisors is an integer number (1024773120).

Almost surely, 2^12265242556 is an apocalyptic number.

It is an amenable number.

12265242556 is an abundant number, since it is smaller than the sum of its proper divisors (12329312324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12265242556 is a wasteful number, since it uses less digits than its factorization.

12265242556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144113 (or 1144111 counting only the distinct ones).

The product of its digits is 288000, while the sum is 40.

Adding to 12265242556 its reverse (65524256221), we get a palindrome (77789498777).

The spelling of 12265242556 in words is "twelve billion, two hundred sixty-five million, two hundred forty-two thousand, five hundred fifty-six".