255178506240 has 816 divisors, whose sum is σ = 1036421388288. Its totient is φ = 56868470784.

The previous prime is 255178506229. The next prime is 255178506251. The reversal of 255178506240 is 42605871552.

255178506240 is a `hidden beast` number, since 2 + 5 + 5 + 17 + 8 + 5 + 0 + 624 + 0 = 666.

255178506240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (255178506229) and next prime (255178506251).

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

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, 970260349 + ... + 970260611.

Almost surely, 2^255178506240 is an apocalyptic number.

255178506240 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 255178506240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (518210694144).

255178506240 is an abundant number, since it is smaller than the sum of its proper divisors (781242882048).

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

255178506240 is an equidigital number, since it uses as much as digits as its factorization.

255178506240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 45.

The spelling of 255178506240 in words is "two hundred fifty-five billion, one hundred seventy-eight million, five hundred six thousand, two hundred forty".