1255050720 has 720 divisors, whose sum is σ = 5632698960. Its totient is φ = 260789760.

The previous prime is 1255050707. The next prime is 1255050733. The reversal of 1255050720 is 270505521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1255050707) and next prime (1255050733).

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 114095515 + ... + 114095525.

It is an arithmetic number, because the mean of its divisors is an integer number (7823193).

Almost surely, 2^1255050720 is an apocalyptic number.

1255050720 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 1255050720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2816349480).

1255050720 is an abundant number, since it is smaller than the sum of its proper divisors (4377648240).

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

1255050720 is an equidigital number, since it uses as much as digits as its factorization.

1255050720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 1255050720 is about 35426.6950194341. The cubic root of 1255050720 is about 1078.6662548050. Note that the first 3 decimals are identical.

The spelling of 1255050720 in words is "one billion, two hundred fifty-five million, fifty thousand, seven hundred twenty".