1255505442 has 8 divisors (see below), whose sum is σ = 2511010896. Its totient is φ = 418501812.

The previous prime is 1255505431. The next prime is 1255505473. The reversal of 1255505442 is 2445055521.

It is a sphenic number, since it is the product of 3 distinct primes.

1255505442 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104625448 + ... + 104625459.

It is an arithmetic number, because the mean of its divisors is an integer number (313876362).

Almost surely, 2^1255505442 is an apocalyptic number.

1255505442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1255505442 is a wasteful number, since it uses less digits than its factorization.

1255505442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209250912.

The product of its (nonzero) digits is 40000, while the sum is 33.

The square root of 1255505442 is about 35433.1122257134. The cubic root of 1255505442 is about 1078.7965109089.

The spelling of 1255505442 in words is "one billion, two hundred fifty-five million, five hundred five thousand, four hundred forty-two".