255421405200 has 120 divisors (see below), whose sum is σ = 881138409088. Its totient is φ = 62872957440.

The previous prime is 255421405157. The next prime is 255421405271. The reversal of 255421405200 is 2504124552.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8170984 + ... + 8202183.

Almost surely, 2^255421405200 is an apocalyptic number.

255421405200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255421405200 is an abundant number, since it is smaller than the sum of its proper divisors (625717003888).

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

255421405200 is a wasteful number, since it uses less digits than its factorization.

255421405200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16373201 (or 16373190 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 255421405200 its reverse (2504124552), we get a palindrome (257925529752).

The spelling of 255421405200 in words is "two hundred fifty-five billion, four hundred twenty-one million, four hundred five thousand, two hundred".