1255750251 has 24 divisors (see below), whose sum is σ = 2000355840. Its totient is φ = 686366736.

The previous prime is 1255750231. The next prime is 1255750259. The reversal of 1255750251 is 1520575521.

It is not a de Polignac number, because 1255750251 - 2⁶ = 1255750187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255750259) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 45411 + ... + 67628.

It is an arithmetic number, because the mean of its divisors is an integer number (83348160).

Almost surely, 2^1255750251 is an apocalyptic number.

1255750251 is a deficient number, since it is larger than the sum of its proper divisors (744605589).

1255750251 is a wasteful number, since it uses less digits than its factorization.

1255750251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113095 (or 113072 counting only the distinct ones).

The product of its (nonzero) digits is 17500, while the sum is 33.

The square root of 1255750251 is about 35436.5665802995. The cubic root of 1255750251 is about 1078.8666239547.

The spelling of 1255750251 in words is "one billion, two hundred fifty-five million, seven hundred fifty thousand, two hundred fifty-one".