1255830447 has 4 divisors (see below), whose sum is σ = 1674440600. Its totient is φ = 837220296.

The previous prime is 1255830439. The next prime is 1255830473. The reversal of 1255830447 is 7440385521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7440385521 = 3 ⋅2480128507.

It is not a de Polignac number, because 1255830447 - 2³ = 1255830439 is a prime.

It is a super-2 number, since 2×1255830447² = 3154220223224439618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255830047) 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, 209305072 + ... + 209305077.

It is an arithmetic number, because the mean of its divisors is an integer number (418610150).

Almost surely, 2^1255830447 is an apocalyptic number.

1255830447 is a deficient number, since it is larger than the sum of its proper divisors (418610153).

1255830447 is an equidigital number, since it uses as much as digits as its factorization.

1255830447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418610152.

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 1255830447 is about 35437.6981052664. The cubic root of 1255830447 is about 1078.8895900251.

The spelling of 1255830447 in words is "one billion, two hundred fifty-five million, eight hundred thirty thousand, four hundred forty-seven".