1255550450 has 144 divisors (see below), whose sum is σ = 3063553920. Its totient is φ = 374035200.

The previous prime is 1255550407. The next prime is 1255550477. The reversal of 1255550450 is 540555521.

It is a congruent number.

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 71 ways as a sum of consecutive naturals, for example, 973406 + ... + 974694.

It is an arithmetic number, because the mean of its divisors is an integer number (21274680).

Almost surely, 2^1255550450 is an apocalyptic number.

1255550450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1255550450 is an abundant number, since it is smaller than the sum of its proper divisors (1808003470).

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

1255550450 is a wasteful number, since it uses less digits than its factorization.

1255550450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353 (or 1337 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 32.

The square root of 1255550450 is about 35433.7473321691. The cubic root of 1255550450 is about 1078.8094018376.

The spelling of 1255550450 in words is "one billion, two hundred fifty-five million, five hundred fifty thousand, four hundred fifty".