12555265233420 has 768 divisors, whose sum is σ = 48973065523200. Its totient is φ = 2599727063040.

The previous prime is 12555265233383. The next prime is 12555265233437. The reversal of 12555265233420 is 2433256255521.

12555265233420 is a `hidden beast` number, since 1 + 2 + 5 + 5 + 526 + 52 + 33 + 42 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1399846696 + ... + 1399855664.

It is an arithmetic number, because the mean of its divisors is an integer number (63767012400).

Almost surely, 2^{12555265233420} is an apocalyptic number.

12555265233420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12555265233420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24486532761600).

12555265233420 is an abundant number, since it is smaller than the sum of its proper divisors (36417800289780).

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

12555265233420 is a wasteful number, since it uses less digits than its factorization.

12555265233420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9535 (or 9527 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 45.

The spelling of 12555265233420 in words is "twelve trillion, five hundred fifty-five billion, two hundred sixty-five million, two hundred thirty-three thousand, four hundred twenty".