255077780 has 12 divisors (see below), whose sum is σ = 535663380. Its totient is φ = 102031104.

The previous prime is 255077761. The next prime is 255077791. The reversal of 255077780 is 87770552.

255077780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 84566416 + 170511364 = 9196^2 + 13058^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6376925 + ... + 6376964.

It is an arithmetic number, because the mean of its divisors is an integer number (44638615).

Almost surely, 2^255077780 is an apocalyptic number.

255077780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255077780 is an abundant number, since it is smaller than the sum of its proper divisors (280585600).

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

255077780 is a wasteful number, since it uses less digits than its factorization.

255077780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12753898 (or 12753896 counting only the distinct ones).

The product of its (nonzero) digits is 137200, while the sum is 41.

The square root of 255077780 is about 15971.1546232575. The cubic root of 255077780 is about 634.1970382736.

The spelling of 255077780 in words is "two hundred fifty-five million, seventy-seven thousand, seven hundred eighty".