1255716550 has 36 divisors (see below), whose sum is σ = 2549650428. Its totient is φ = 456322000.

The previous prime is 1255716541. The next prime is 1255716589. The reversal of 1255716550 is 556175521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 830295 + ... + 831805.

It is an arithmetic number, because the mean of its divisors is an integer number (70823623).

Almost surely, 2^1255716550 is an apocalyptic number.

1255716550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1255716550 is an abundant number, since it is smaller than the sum of its proper divisors (1293933878).

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

1255716550 is an equidigital number, since it uses as much as digits as its factorization.

1255716550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3045 (or 1529 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 37.

The square root of 1255716550 is about 35436.0910654660. The cubic root of 1255716550 is about 1078.8569725638.

The spelling of 1255716550 in words is "one billion, two hundred fifty-five million, seven hundred sixteen thousand, five hundred fifty".