255400000 has 84 divisors (see below), whose sum is σ = 633967236. Its totient is φ = 102080000.

The previous prime is 255399997. The next prime is 255400003. The reversal of 255400000 is 4552.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (255399997) and next prime (255400003).

It can be written as a sum of positive squares in 6 ways, for example, as 194435136 + 60964864 = 13944^2 + 7808^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (255400003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199362 + ... + 200638.

It is an arithmetic number, because the mean of its divisors is an integer number (7547229).

Almost surely, 2^255400000 is an apocalyptic number.

255400000 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 255400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316983618).

255400000 is an abundant number, since it is smaller than the sum of its proper divisors (378567236).

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

255400000 is an frugal number, since it uses more digits than its factorization.

255400000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314 (or 1284 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 255400000 is about 15981.2390007784. The cubic root of 255400000 is about 634.4639699040.

Adding to 255400000 its reverse (4552), we get a palindrome (255404552).

The spelling of 255400000 in words is "two hundred fifty-five million, four hundred thousand".