255115380 has 48 divisors (see below), whose sum is σ = 769273344. Its totient is φ = 62797440.

The previous prime is 255115369. The next prime is 255115387. The reversal of 255115380 is 83511552.

It is a super-2 number, since 2×255115380² = 130167714225088800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255115387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162756 + ... + 164315.

It is an arithmetic number, because the mean of its divisors is an integer number (16026528).

Almost surely, 2^255115380 is an apocalyptic number.

255115380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255115380 is an abundant number, since it is smaller than the sum of its proper divisors (514157964).

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

255115380 is a wasteful number, since it uses less digits than its factorization.

255115380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327096 (or 327094 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 255115380 is about 15972.3317020403. The cubic root of 255115380 is about 634.2281982294.

The spelling of 255115380 in words is "two hundred fifty-five million, one hundred fifteen thousand, three hundred eighty".