255274502640240 has 320 divisors, whose sum is σ = 868015207756800. Its totient is φ = 61812088676352.

The previous prime is 255274502640163. The next prime is 255274502640317. The reversal of 255274502640240 is 42046205472552.

It is an interprime number because it is at equal distance from previous prime (255274502640163) and next prime (255274502640317).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 255274502640240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11071669 + ... + 25162091.

It is an arithmetic number, because the mean of its divisors is an integer number (2712547524240).

Almost surely, 2^{255274502640240} is an apocalyptic number.

255274502640240 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 255274502640240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (434007603878400).

255274502640240 is an abundant number, since it is smaller than the sum of its proper divisors (612740705116560).

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

255274502640240 is a wasteful number, since it uses less digits than its factorization.

255274502640240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14090624 (or 14090618 counting only the distinct ones).

The product of its (nonzero) digits is 5376000, while the sum is 48.

The spelling of 255274502640240 in words is "two hundred fifty-five trillion, two hundred seventy-four billion, five hundred two million, six hundred forty thousand, two hundred forty".