1255399200 has 432 divisors, whose sum is σ = 4906373472. Its totient is φ = 302016000.

The previous prime is 1255399193. The next prime is 1255399237. The reversal of 1255399200 is 29935521.

It is a happy number.

1255399200 is a `hidden beast` number, since 12 + 55 + 399 + 200 = 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 polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9583135 + ... + 9583265.

It is an arithmetic number, because the mean of its divisors is an integer number (11357346).

Almost surely, 2^1255399200 is an apocalyptic number.

1255399200 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 1255399200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2453186736).

1255399200 is an abundant number, since it is smaller than the sum of its proper divisors (3650974272).

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

1255399200 is a wasteful number, since it uses less digits than its factorization.

1255399200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 1255399200 is about 35431.6130030796. The cubic root of 1255399200 is about 1078.7660804735.

The spelling of 1255399200 in words is "one billion, two hundred fifty-five million, three hundred ninety-nine thousand, two hundred".