255320505400000 has 672 divisors, whose sum is σ = 668359428758784. Its totient is φ = 96638054400000.

The previous prime is 255320505399997. The next prime is 255320505400019. The reversal of 255320505400000 is 4505023552.

It is a happy number.

It is a super-2 number, since 2×255320505400000² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 111347798854 + ... + 111347801146.

It is an arithmetic number, because the mean of its divisors is an integer number (994582483272).

Almost surely, 2^{255320505400000} is an apocalyptic number.

255320505400000 is a gapful number since it is divisible by the number (20) 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 255320505400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334179714379392).

255320505400000 is an abundant number, since it is smaller than the sum of its proper divisors (413038923358784).

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

255320505400000 is an equidigital number, since it uses as much as digits as its factorization.

255320505400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775 (or 2745 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 31.

The spelling of 255320505400000 in words is "two hundred fifty-five trillion, three hundred twenty billion, five hundred five million, four hundred thousand".