1255667258 has 8 divisors (see below), whose sum is σ = 1884669120. Its totient is φ = 627444220.

The previous prime is 1255667251. The next prime is 1255667263. The reversal of 1255667258 is 8527665521.

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

It is not an unprimeable number, because it can be changed into a prime (1255667251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190658 + ... + 197133.

It is an arithmetic number, because the mean of its divisors is an integer number (235583640).

Almost surely, 2^1255667258 is an apocalyptic number.

1255667258 is a deficient number, since it is larger than the sum of its proper divisors (629001862).

1255667258 is a wasteful number, since it uses less digits than its factorization.

1255667258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389412.

The product of its digits is 1008000, while the sum is 47.

The square root of 1255667258 is about 35435.3955530343. The cubic root of 1255667258 is about 1078.8428558659.

The spelling of 1255667258 in words is "one billion, two hundred fifty-five million, six hundred sixty-seven thousand, two hundred fifty-eight".