255401420 has 48 divisors (see below), whose sum is σ = 566227200. Its totient is φ = 96500160.

The previous prime is 255401371. The next prime is 255401441. The reversal of 255401420 is 24104552.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166055 + ... + 167585.

It is an arithmetic number, because the mean of its divisors is an integer number (11796400).

Almost surely, 2^255401420 is an apocalyptic number.

255401420 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 255401420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283113600).

255401420 is an abundant number, since it is smaller than the sum of its proper divisors (310825780).

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

255401420 is a wasteful number, since it uses less digits than its factorization.

255401420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998 (or 1996 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 255401420 is about 15981.2834278102. The cubic root of 255401420 is about 634.4651457552.

Adding to 255401420 its reverse (24104552), we get a palindrome (279505972).

The spelling of 255401420 in words is "two hundred fifty-five million, four hundred one thousand, four hundred twenty".