1255104400 has 60 divisors (see below), whose sum is σ = 3289526064. Its totient is φ = 456400000.

The previous prime is 1255104397. The next prime is 1255104419. The reversal of 1255104400 is 44015521.

It is a Harshad number since it is a multiple of its sum of digits (22).

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 11 ways as a sum of consecutive naturals, for example, 138226 + ... + 147025.

Almost surely, 2^1255104400 is an apocalyptic number.

1255104400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255104400 is an abundant number, since it is smaller than the sum of its proper divisors (2034421664).

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

1255104400 is a wasteful number, since it uses less digits than its factorization.

1255104400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285280 (or 285269 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1255104400 is about 35427.4526321044. The cubic root of 1255104400 is about 1078.6816331952.

Adding to 1255104400 its reverse (44015521), we get a palindrome (1299119921).

The spelling of 1255104400 in words is "one billion, two hundred fifty-five million, one hundred four thousand, four hundred".