12255905560 has 32 divisors (see below), whose sum is σ = 27586802160. Its totient is φ = 4900404096.

The previous prime is 12255905551. The next prime is 12255905569. The reversal of 12255905560 is 6550955221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12255905551) and next prime (12255905569).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12255905569) 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, 42367 + ... + 162193.

Almost surely, 2^12255905560 is an apocalyptic number.

12255905560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12255905560 is an abundant number, since it is smaller than the sum of its proper divisors (15330896600).

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

12255905560 is a wasteful number, since it uses less digits than its factorization.

12255905560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122395 (or 122391 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 12255905560 in words is "twelve billion, two hundred fifty-five million, nine hundred five thousand, five hundred sixty".