1255833261 has 8 divisors (see below), whose sum is σ = 1860493760. Its totient is φ = 837222156.

The previous prime is 1255833259. The next prime is 1255833269. The reversal of 1255833261 is 1623385521.

1255833261 is a `hidden beast` number, since 1 + 255 + 83 + 326 + 1 = 666.

It is not a de Polignac number, because 1255833261 - 2¹ = 1255833259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255833269) 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 7 ways as a sum of consecutive naturals, for example, 23256145 + ... + 23256198.

It is an arithmetic number, because the mean of its divisors is an integer number (232561720).

Almost surely, 2^1255833261 is an apocalyptic number.

It is an amenable number.

1255833261 is a deficient number, since it is larger than the sum of its proper divisors (604660499).

1255833261 is an equidigital number, since it uses as much as digits as its factorization.

1255833261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46512352 (or 46512346 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 1255833261 is about 35437.7378087259. The cubic root of 1255833261 is about 1078.8903958645.

The spelling of 1255833261 in words is "one billion, two hundred fifty-five million, eight hundred thirty-three thousand, two hundred sixty-one".