1255946400 has 432 divisors, whose sum is σ = 4855189248. Its totient is φ = 304128000.

The previous prime is 1255946381. The next prime is 1255946411. The reversal of 1255946400 is 46495521.

1255946400 is a `hidden beast` number, since 1 + 2 + 5 + 5 + 9 + 4 + 640 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 3794235 + ... + 3794565.

It is an arithmetic number, because the mean of its divisors is an integer number (11238864).

Almost surely, 2^1255946400 is an apocalyptic number.

1255946400 is a gapful number since it is divisible by the number (10) 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 1255946400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2427594624).

1255946400 is an abundant number, since it is smaller than the sum of its proper divisors (3599242848).

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

1255946400 is a wasteful number, since it uses less digits than its factorization.

1255946400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 1255946400 is about 35439.3340795224. The cubic root of 1255946400 is about 1078.9227942512.

The spelling of 1255946400 in words is "one billion, two hundred fifty-five million, nine hundred forty-six thousand, four hundred".